LETSCOM Fitness Tracker, Activity Tracker, Pedometer, Smart Watch with Step Counter, Calorie Counter and Sleep Monitor, Fitness Watch for Women Men and Kids

This fitness tracker does NOT include heart rate monitor feature.
What’s more:
IP67 Water Resistant: Sweat-proof, rain-proof, but do NOT wear it when you are showering or swimming.
Wide Compatibility: You can connect with most major smartphones whose OS is iOS 7.1 & later or Android 4.4 & later (not PC, iPad or tablet).
Reminders to Move: Reminds you to move when you are sitting too much.
Alarms: Set alarms to wake you up or remind yourself of important dates, meetings, and interviews, etc.
Find Phone: Set the tracker to locate your phone by making the phone vibrate or ring.
SPECIFICATIONS：
Model: ID130
MCU: Nordic nRF51822QFAC
Battery Capacity and Battery Type: 45mAh Polymer Rechargeable Li Battery
Charging Time: 1-2 hours
Working Time: About 7 days
Product Weight: 19g
Band Material: TPE
Charging Port: USB charging (Built-in USB Plug)
Working Voltage: 3.7V
Screen Size: 0.87″ OLED screen