We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black medium smart bracelet with aluminium case and silicone strap

allentian

allentian F37 Smart Bracelet Black Medium

SKU CH-K463-XJ0EB

Tracks steps, heart rate, blood pressure, blood oxygen and sleep with a touch TFT screen and magnetic charging

  • ColorBlack
  • SizeMedium
  • CompatibilityAndroid / IOS
  • Sports TeamNO
  • Health tracking for fitness insights with heart rate, blood pressure and blood oxygen monitoring
  • Instant notifications keep you connected via intelligent reminders and social entertainment features
  • Motivational fitness features include step counting and sleep monitoring for daily goals
  • Voice assistants add convenience through touch-type operation on the TFT screen
  • Stylish customizable design with aluminum alloy case, silicone sporty strap and magnetic charging

What the F37 smart bracelet does

The allentian F37 is a wrist-worn health tracker built for everyday users who want basic fitness insights and phone alerts without a bulky watch. It records steps, heart rate, blood pressure, blood oxygen and sleep patterns, then pushes call and message notifications to a TFT touchscreen. The silicone sport strap and aluminium alloy case keep it light at 128 g for all-day wear.

Health sensors that drive the purchase

Continuous heart-rate, blood-pressure and blood-oxygen monitoring is the single spec that decides if this band fits the buyer. The optical module samples each metric throughout the day and during exercise, feeding the companion app on Android or iOS. Buyers who need clinical-grade ECG, skin-temperature trends or automatic fall detection will not find those functions here.

Behaviour over a full week

A magnetic charger tops the cell in under two hours and the band then runs for less than seven days with typical tracking and notifications enabled. Life-waterproof sealing handles rain, hand-washing and sweat, but it is not rated for swimming or showering. Heavy use of the bright TFT screen and constant Bluetooth sync will shorten the runtime, so plan a mid-week top-up for intensive days.

Highlights

  • Health tracking for fitness insights with heart rate, blood pressure and blood oxygen monitoring
  • Instant notifications keep you connected via intelligent reminders and social entertainment features
  • Motivational fitness features include step counting and sleep monitoring for daily goals
  • Voice assistants add convenience through touch-type operation on the TFT screen
  • Stylish customizable design with aluminum alloy case, silicone sporty strap and magnetic charging

Specifications

ColorBlack
SizeMedium
CompatibilityAndroid / IOS
Sports TeamNO

Questions about this item

How does the TFT screen and touch operation affect daily use of the F37?

The TFT display shows step count, heart rate, blood pressure, blood oxygen and sleep data clearly, while touch control lets you swipe through menus and dismiss notifications without buttons.

What does the magnetic charging cable and life-waterproof rating mean for everyday wear?

Magnetic charging snaps on for easy top-ups that last under seven days, and life-waterproof protection handles sweat, rain and hand-washing but is not rated for swimming or submersion.

Will the 128 g aluminium case and medium sporty silicone strap fit securely for all-day tracking?

The lightweight aluminium body and adjustable medium silicone strap are designed for comfortable, secure fit during exercise and sleep monitoring.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.