WWART ECG+PPG Smart Bracelet - IP68

Specifications: ★Bluetooth version: Bluetooth 4.0 ★Built-in chip: Nordic nRF52832 ★Waterproof rating: IP68 ★Wristband material: TPU ★Screen size: 1.08 inch IPS color screen ★Screen type: TFT ★Operation mode: touch, raise hand to display ★Battery capacity: 1 20mAh ★Battery type: polymer lithium battery ★Life time: 5 days ★Charging time: about 1~2 hours ★Charging method: USB direct charge ★Package content: bracelet x1, quick start manual x1, packing box x 1