B3 Smart Watch with Heart Rate and Sleep Tracking, BLE 5.3

The B3 smart watch tracks heart rate, blood oxygen, steps, and sleep. BLE 5.3 connects it to the Nx Wear app for data syncing, while an 18mAh battery provides approximately 3-5 days of use with magnetic cable charging.

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The B3 smart watch combines daily activity tracking with heart rate, blood oxygen, and sleep monitoring in a slim wrist-worn design. Its zinc alloy and epoxy resin construction houses an 18mAh battery, with approximately three to five days of working time and magnetic cable charging.

Use step counting and multiple sport modes to follow everyday movement, then sync recorded data to the Nx Wear app over BLE 5.3. The supplied specifications list Android 6.0 or later and iOS 11.0 or later. Additional functions include stress monitoring, heart rate variability, menstrual cycle tracking, and shake-to-trigger phone photography.

Model Number

B3

Product Type

Smart Watch

Processor

OM6626B

Housing Material

Zinc alloy and epoxy resin

Bluetooth Version

BLE 5.3

Battery Type

Lithium polymer

Battery Capacity

18mAh

Battery Protection

Battery protection IC

Battery Life

Approximately 3–5 days

Charging Time

2 hours

Charging Method

Magnetic charging cable

Charging Cable Protection

SMT protection IC

Charger Current Requirement

1A or less

Accelerometer

SC7A20H

Heart Rate Sensor

HX3918

Heart Rate Monitoring

Supported

Blood Oxygen Monitoring

Supported

Stress Monitoring

Supported

Heart Rate Variability

Supported

Menstrual Cycle Tracking

Supported

Remote Phone Camera Control

Shake-to-trigger photography

Sport Modes

Multiple modes; individual modes not specified

Sleep Monitoring

Sleep duration and sleep quality

Step Counting

Supported

App Data Synchronization

Supported

Companion App

Nx Wear

App Download Methods

App store search or QR code

Compatible Operating Systems

Android 6.0 or later; iOS 11.0 or later

Water Resistance Rating

5 ATM, as stated in the supplied specification

Operating Temperature

0–45°C

Storage Temperature

−10–55°C

Operating Humidity

5–95% RH, non-condensing

Electrostatic Protection

Contact: ±6kV; air: ±10kV

Surge Protection

12V

Drop Test Reference

GB/T 2423.8

Vibration Test Reference

GB/T 2423.10

Charging Temperature Protection

45°C

Device Dimensions

44.5 × 10.5 × 5.6mm

Net Weight

16.5g

Gift Box Dimensions

92 × 90 × 33mm

Carton Quantity

100 units

Carton Gross Weight

Approximately 5.6kg

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