The DT. No. 1 F3 Smartwatch is one such smartwatch that gets power from a button cell battery. This a simple digital watch, with same features as seen on a digital watch but it comes with built in Bluetooth and fitness tracking and alert features.

There are many Smart Watches available in the markets but hardly any of these give a really good battery life, most smartwatches battery last for 1 to 2 days and for some it can go up to 5 days (like the Amazfit Smartwatch). However this one the DT. No. 1 F3 is different it gives up to 1 year of battery life.

This watch is different it looks similar to and has similar functions as seen on many digital watches but it comes with Bluetooth, pedometer, barometer, Altimeter and more. It is powered by CR2032 button cell battery, there is no need to charge, when battery goes dead simply replace it.

DT. No. 1 F3 smartwatch review

DT. NO.1 F3 Smartwatch specifications

Color options : Black-Blue; White-Orange; White-Blue; Black-Red;
BT version : Bluetooth 4.0
Water Proof : Yes, IP68 – waterproof up to 30 meter
Features : Step counter, calories, distance, sleep
App support : Yes, Fundobracelet
Alerts : Call, SMS, Apps (you can select the apps)
Screen : Round display (non-touch screen), always on, light
Battery : Removable button cell
Build / quality : Okay, cheap material used, back color version might look good

DT. No. 1 F3 body


This is an ordinary digital watch that will always show you the time. There are icons for notification, when you get a notification the watch may beep, vibrate and the respective icon will blink, depending on the settings.

As far as the step count is concerned the readings were consistent. The best part about such smart devices is that you don’t have to worry about the battery life. The button cell battery will last for up to 1 year and if you use Bluetooth on for alerts / call notifications etc then probably the battery will last around 6 months or so.

DT. No. 1 F3 smartwatch box pack

Apart from checking the step count, distance and calories burned the watch will not show you any other details, just alert notifications.

Price is very good at around Rs. 1200. You can buy this from Banggood but as of now the price has increased to around Rs. 2100, it may change so watch out.

You can buy this from website, choose free shipping, the packing is small and there will be no custom duty.

Rating 4 out of 5

By Rajeev Rana

Founder and Chief Editor -