Skip to content

Free Shipping across the USA

4-7 Days Estimated Delivery

14-Day Money Back Guarantee

Get in touch with us

K21 Blood Pressure Smart Watch

$59.95 $67.95
local_offer Save 11% local_offer Save 11% local_offer Save 11%
Unit price  per 

Modern and sleek, the K21 Smart Watch from The time master is a fashionable way to keep your health on track, with an IP68 water and dust resistance rating for peace of mind.

Featuring a heart rate monitor and smart notification support, you can easily monitor your health and receive important notifications on your wrist from your smartphone.


Health Monitor: Automatically and accurately monitor and analyze your heart rate, blood pressure and blood oxygen.Let you know your health condition at any time and anywhere.

Thermometer Monitor: With built-in thermometer sensor, the watch can check temperature at any moment by raising up the hand.

Sleep Monitor: This watch will automatically turn on from 9:30PM to 12:00AM.Record your sleep duration and then analyze your sleep quality.Help you adjust the rest time for a better sleep quality.

Multiple Workout Modes: 8 kinds of sport modes are offered to you, such as running ,walking, climbing, riding and so on, meeting your different exercise needs.

Smart Reminder: When connected with your phone, this watch can provide synchronous display of all social messages, such as SMS, Facebook, Whatsapp Wechat and so on. It also offers incoming calls reminder and sedentary reminder.

IP68 Waterproof: Can be worn while swimming washing hand or in rain.Help you dealing with daily water activities easily.

More Functions: Steps,Calories,Distance,Alarm Clock,Drinking water reminder,Medication reminder,Meeting reminder,Remote camera, Timer, Stopwatch, Countdown, Find my phone after connecting app,Don't disturb,Raise your wrist to light up screen.


Screen Size:1.3 inches
Compatibility:Android 4.4 and above or iOS 8.2 and above
Battery Type:Rechargeable lithium battery
Battery Capacity:230mAh
Memory:521KB(Flash 64MB)
Standby Time:About 30 days
Working Time:5-7days
App:F Fit

Important Notes:

Connect BT: Please power on your phone BT and turn on smart watch BT before connecting.

Please ensure your smart watch did not connect with other phone before connecting.

Please keep close to your smart watch when you are connecting.

Please turn on mobile phone notifications and allow permissions to run in the background if your mobile has installed "Mobile manager" or other similar Apps, otherwise you will not receive the messages.

Battery Recharge: Power adaptor: 5V 0.5-1A If the bracelet won't be used for long period, please ensure a full charging every month and turn it off after getting full charged.

To ensure the accuracy of blood pressure data, please hold the smart band at the same height as your heart, relax yourself and calm down. Do not talk when the monitor is working. (this function is to monitor the blood pressure data change before & after exercise. The data are only for reference, can't be used for special medical purpose).


Package Content:

1*Smart Watch
1*Charging Cable
1*User Manual

Shipping & Delivery:

Your order will be dispatched in 1-3 business days after your payment.

Once dispatched, you'll receive a tracking code to the email you registered when you ordered. The package will deliver within 6-9 days right to your address in the USA.




Didn't find your answer?

Our customer service will be happy to help you.

Quality Products

We Stand By Our High Quality Products and Your Satisfaction is Guaranteed.

Free USA Shipping

Free Shipping On Every Order. Easy Returns.

Guaranteed Safe Checkout

Pay with the Most Popular and Secure Payment Methods.