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Valley Electronics Pearly

  1. The first pocket-size natural family planning computer in the world
  2. Track your personal cycle – great for natural contraception
  3. No recurring costs – lasts for up to 10 years!
  4. Clinical studies show 99.3% accuracy
  5. Portable & has no side effects

More Info...

Order on the phone: Call 01482 496931, quote SKU: 10307

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Sick of taking the pill every day?Try fertility awareness!

Think your choices are limited to taking the pill or using condoms? Well, now there’s an effective means of contraception that doesn’t require filling your body with unnecessary hormones and suffering the adverse emotional and physical consequences. Additionally, you no longer need to be concerned about the reduced sensitivity that condoms bring. The Valley Electronics Pearly is a natural solution to all of your contraceptive woes. By determining the times at which you are most fertile, it enables you to ascertain when it is safe to have sex without conceiving.

Don’t be worried sick about contraception!

What is Pearly?

This really is the most valuable pearl you will ever own! The Valley Electronics Pearly offers contraception and birth control without any unwanted side effects or recurrent costs. Featuring an easy to read LCD display, and a simple oral thermometer, it records your basal temperature each morning, determining the times at which you are most fertile.

Cleverly programmed with natural family planning research, it has a database of more than 900,000 different women’s cycles stored. Using bio-mathematical forecasting calculations, as well as the very latest computer techniques, it adjusts to your individual cycle and ovulation, predicting the times at which you are most fertile.

pEARLYThe Valley Electronics Pearly is proven to be an extremely effective method of contraception. In fact, clinical studies report it to be 99.3% accurate as an ovulation calculator. Differing from other products on the market, it leaves a 5 day window for possible fertility. This is because sperm can survive in a woman’s body for up to this length of time.

It’s something you just can’t do without.

Please note: medications that affect your basal body temperature can reduce the accuracy of the readings.

What does Pearly provide for me?

Pearly is not just a one trick pony. In addition to being an effective means of contraception, it is also a fabulous fertility calculator and pregnancy indicator. It features an LCD display with time, date, year, time zone, shift work and an alarm clock. Once you have mapped your cycle, it will display fertility, ovulation day, cycle day, 99 previous day readings and 6 days’ future predictions.

There are three coloured lights on the Pearly: red meaning fertile or ovulating, amber meaning Pearly is still learning your cycle or regular readings have been missed, and green meaning infertile (safe to use as natural contraception). The product has an 8-10 year life expectancy and measures 7 cm x 10 cm.

Pearly provides all the protection against pregnancy that you need.


When it comes to sex, do condoms mean that you’re just not ‘feeling it’ lately? Well, we’re all aware of the two most common methods of contraception, but all too often we fail to realise that there are other options available to us. Many times, it’s a case of opting for the lesser of two evils; either put chemicals in our bodies and endure the side effects (including headaches, nausea, mood swings), or tolerate that reduced sensitivity that condoms are so well known for. And did you know that neither of these methods are 100% successful anyway? In fact, condoms have a particularly high failure rate, at 18%[1].

Many women opt for hormones as their preferred method of contraception. Scarily, this has the potential to affect fertility in the long run. In terms of the pill, it can take years for a woman’s cycle to return to normal after they stop taking it. In addition, it can be an unreliable method where it is not taken at the same time daily, and a number of medications can render it useless. It’s believed that for every year the pill is taken, the cervix ages by an extra year[2] and taking for a prolonged period of time can increase the risk of cervical or breast cancer[3].

The Valley Electronics Pearly enables you to enjoy a natural form of contraception, without putting your health at risk. It can be used alongside other contraceptive methods that are not hormone based or invasive. But please remember, the Pearly is designed for those in a monogamous relationship; fertility awareness can be an effective means of natural birth control, but does not protect against sexually transmitted infections.

Pearly won’t let you down.

Daily obstacles

Each day brings with it its own challenges. So why not let Pearly do some of the hard work for you?

Many distractions can prevent you from tracking your own cycle, and there is no method of doing so that is 100% reliable. The Pearly can help. Even if the battery goes flat, this clever device will store all of your data and the internal clock will keep counting, ready for when it comes back on. The data is also incredibly difficult to delete and, as such, it cannot be done by mistake, even if those little terrors get their hands on it, or you accidentally press the wrong buttons.

Although drinking, lack of sleep, or illness shouldn’t affect Pearly’s performance; the fertility indicator may appear due to a high temperature. As such, it is recommended that you stop using until you are 100% again. Omitting the odd reading here and there won’t affect the reliability of the data; Pearly will generate missing data over short periods and still continue as normal. However, it is best to keep a regular diary.

Take each day as it comes with Pearly.

When do I use Pearly?

As women, we’re used to making plans around our time of the month. No-one wants to organise a romantic weekend away, only to have an unwelcome and unwanted surprise sprung upon us. However, now that romantic weekend away can be even better. Forget worrying about contraception, Pearly is small and discreet, so it is the perfect accompaniment, even on those naughty weekends away. Now you can have the time of your life without any of the worry whatsoever!

It is possible to start tracking our cycle from the age of 19, as this is typically when it becomes regular. However, you can do so at any age thereafter. After giving birth, you are physiologically infertile for approximately 6 weeks. In this instance, we recommend that you don’t start using your Pearly until after this time. Unfortunately, it cannot predict your first ovulation, it will, however, confirm it. Following this cycle, Pearly will be able to predict fertility as normal.

Accurate to 1/100 degrees, it takes merely 30 seconds and the push of a button for the oral thermometer to take your basal body temperature and provide a precise reading. It is important that this is done when you wake up, at the same time each day. However, the innovative Chip III generation of Pearly gives women a 6 hour window in which to take their temperature, as long as they have slept prior to doing so. It is therefore ideal for women caring for children, or that work shifts and sleep and different hours during a week. You could take your temperature at 7am on Monday, and at 2pm on Tuesday and Pearly will still be able to formulate a reliable and customised reading.If you wish to store and view your data on another device you can also transfer the data via USB or Bluetooth which allows you to see your readings for more than the 99 day storage on your Pearly.

As you can record 99 days worth of readings Pearly builds up a very detailed image of your fertility which gives it it's incredibly high level of accuracy which you can trust. You can also attain a comprehensive analysis of your cycle data with a full ovulation forecast to help you plan into the future.


Pearly is ready when you are.

The first in the world

Valley Electronics is well known for innovation and forward thinking. Established in 1986, it has spent more than 25 years dedicated to developing and improving fertility computers. In fact, it was behind the very first family planning computer in the world. An expert team of gynaecologists, software specialists, electronics engineers, and designers work to consistently bring us the very best in design, technology and efficacy. Pearly is ISO-certified, approved as a contraceptive device in Europe and an ovulation predictor in America.

It really will be your number 1 choice when it comes to contraception.

To view the entire range, click on the brand below.

Please note: This item can only be shipped within the UK.





Delivery & Returns

FREE Delivery when you spend over £50, and FREE returns if you’re not delighted with the product

Royal Mail fast and discreet delivery or UPS for Next Day Express (available on most items)

Here to help – our Customer Service Team is on hand to help you 9 – 5 Monday to Friday


SKU / Product Code 10307
Brand Valley Electronics
Included Contents Pearly with Attached Oral Thermometer,
Power Internal Lithium Battery That Lasts 2 - 3 Years
Warranty 2 Year Manufacturer Warranty
User Manual View and/or Download the Product Comparison Chart

View and/or Download the Pearly User Guide

View and/or Download the Pearly Brochure
Clinical References View and/or Download the Pearly Clinical Tests
Size 7 cm x 10 cm
Product Rating
5 star :
( 2 )
Total : 2 Reviews
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Great. Would recommend Review by Rosie
Product Rating
I've used this for 6 months now and I am amazed how easy it is. I have great faith in it and I really happy to no longer be taking the pill as it was affecting my weight. I also them went for an implant and that was dire - I just went off sex completely so apart from being an effective form contraception it is that because I never wanted sex! Husband was most unimpressed as I was too. This natural form of contraception seems to work really ell for me and I have lost weight as well as getting my sex drive back! Hurray! (Posted on 18 September 2015)
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(1 of 2 people found this review helpful)
Got my libido back now the implant has gone! Keep it natural Ladies! Review by Felicity
Product Rating
Easy to use, I am really happy I opted for this natural route. I feel healthier than I have for years since having my implant removed, and my libido is back - I could not believe how my libido dropped when I had the implant! It was horrific!
I feel that I am back in tune with my body and back in tune with Hubby. He's delighted, and so am I. (Posted on 27 January 2016)
Do you find this review helpful?  Yes No
(1 of 1 people found this review helpful)

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Product Questions

I have had a Pearly for several years, and my battery has just recently died. I would like to send it back to get a new battery, but I don't know where to send it. Is there somewhere I can send it for a new battery? What should I do?