Shenzhen Kingstar Technology Co., Ltd.
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APP:Health Ring
Material: stainless steel+ resin
Width/Thickness: 8 mm/3 mm
Bluetooth: BLE 5.3 for JL chip
Battery: 18mAh/3.7V lithium battery
Charging: usb magnetic charging
Battery life: about 5~7 days
Charging time: 80 minutes
Waterproof: IP68