Smart Bracelet With Vibration Reminder Alarm Clock Countdown $ 5.67 Product information: Display: LED seven-segment display Battery capacity: 40 mAh Charging Method: Micro UsB port Sleep current: 10 uA Battery life: charge and discharge times> 300 times Standby time: 60 days Power supply voltage: DC = 4.5V ~ 5.5V Material: Silicone Operating atmospheric pressure: m860hPa ~ 1060hPa Size: 66167.8mm Packing list: Smart Bracelets*1 Product Image:
