Measurement accuracy:± 0.1 ℃ (measured under liquid nest) Measurement range:30-45 ℃ Prompt method:vibration motor Display screen:LED light display Waterproof level:IPX57 Product function introduction: 1. Body temperature measurement: Automatically measure body temperature throughout the day. When the measured temperature is 37.3℃, the bracelet automatically alarm. 2. Time/Date 3. Vibration alarm clock can set 6 sets of alarm clocks 4. Stopwatch 5. Rechargeable polymer lithium battery, fully for 30 days Note: The above functions all support single watch replacement, without binding mobile phone or computer software. Charging voltage:DC=5V (built-in USB can be directly plugged into power bank for charging) Product material:strap environmentally friendly silicone + shell ABS Battery capacity:75mAh 3.7V Product weight:17g Use environment:-10-50℃ Product size:240x16x8mm (length x width x height) Colour:B:Blue Material:Silicone Package Contents: 1 * digital smart bracelet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.