Is Daysy reliable and safe?

Yes, Daysy is a medical device with an accuracy of 99,4%

How soon can I trust Daysy's results?

You can trust Daysy's results starting directly from day one.

Daysy is for anyone who menstruates, whether you work shifts, are a mom, want to conceive, wish to prevent pregnancy, or are dealing with cycle-related issues like PCOS or endometriosis.

How long does the temperature measurement take?

The measurement takes just about 60 seconds a day. Simply take your basal temperature each morning after waking up to monitor your cycle.

Do I always have to measure my basal temperature at the same time?

No. What’s important is that you’ve rested for at least one hour and take your temperature immediately after waking, before getting up or moving around.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Daysy 2.0 Medical Device for Cycle and Ovulation Monitoring | Indicates Fertile and Non-Fertile Days - 99.4% Accuracy | Also for Pregnancy Planning

Product ID: 741089143

Details

Brand
Daysy
Connectivity technology
Bluetooth
Model name
Special features
High Accuracy
Style
Specialized

📊99.4% accuracy algorithm

📱Bluetooth data sync

🔋Rechargeable Micro-USB battery

¥102426

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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Description

🌿 Own Your Cycle, Own Your Power — Smarter, Natural, Connected.

SEAMLESS SMART SYNC - Effortlessly transfers your cycle data to the intuitive DaysyDay app via Bluetooth for in-depth insights.
DATA DRIVEN WELLNESS - Share cycle trends with your partner or healthcare provider to optimize reproductive health and hormonal balance.
PRECISION YOU CAN TRUST - Leverages 35+ years of research and 5 million cycles for 99.4% accurate fertile day predictions.
QUICK SIMPLE DAILY CHECK - Measure basal temperature in under 60 seconds with a clear color-coded fertility status—no guesswork needed.
EMPOWER YOUR NATURAL RHYTHM - Harness a hormone-free, eco-conscious method to plan or prevent pregnancy while understanding your body deeply.

Daysy 2.0 is a cutting-edge fertility monitor combining a highly accurate basal temperature sensor with a proprietary algorithm trained on millions of cycles. Its Bluetooth-enabled design syncs effortlessly with the DaysyDay app, offering personalized, real-time fertility insights in under a minute. Designed for natural family planning, Daysy empowers users to track ovulation and hormonal health without hormones, supporting eco-friendly, data-driven reproductive choices.

Specifications

ASIN	B01HNCPTWQ
Additional Features	High Accuracy
Age Range Description	Adult
Best Sellers Rank	#101,125 in Health ( See Top 100 in Health ) #247 in Family Planning & Birth Control Products
Brand	Daysy
Built-In Media	Battery
Color	White
Connectivity Technology	Bluetooth
Customer Reviews	4.3 4.3 out of 5 stars (313)
Display Type	LCD
Item Dimensions	46 x 48 x 22 millimeters
Item Weight	0.04 Kilograms
Manufacturer	Valley Electronics AG
Model Name	[4629999054073]
Model Number	Daysy
Resolution	0.1 degree
Style Name	Specialized
Unit Count	1.0 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥102426

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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