Specifications: Built-in high-precision temperature sensor for continuous body temperature monitoring. When the measured temperature exceeds 37.3°C, the bracelet displays the current temperature, vibrates, and shows a green, yellow, or red indicator light accordingly. Supports time and date display, stopwatch function, and dual vibration alarm settings. Equipped with a built-in rechargeable battery providing up to 30 days of operation on a full charge. No need to pair with a mobile phone or computer software. Item Name: Smart Bracelet Case Material: ABS Strap Material: Silicone Measurement Accuracy: ±0.1°C (measured under the armpit) Measurement Range: 30–45°C Alert Method: Vibration Motor Display Screen: LED Light Display Waterproof Rating: IPX57 Charging Voltage: DC 5V (USB charging supported) Battery Capacity: 3.7V, 75mAh (included) Operating Environment: -10°C to 50°C Features: Temperature measurement, vibration alarm, comfortable wear Strap Length: 240mm (9.45 inches) approximately Strap Width: 16mm (0.63 inches) approximately Strap Thickness: 8mm (0.31 inches) approximately Note: Due to lighting and screen setting differences, the item's color may vary slightly from images. Slight dimensional variations may occur due to manual measurement. Package Includes: 1 x Smart Bracelet 1 x User Manual