Stylish Design: The W5SV features a sleek and modern design with a comfortable silicone band<br> LED Display: Equipped with a clear LED 7-segment display for easy viewing of time and notifications<br> Vibrating Alarm: Set alarms and receive wake-up alerts through gentle vibrations, ensuring a peaceful start to your day<br> Sleep Monitoring: Track your sleep patterns and gain insights into your sleep quality for improved rest<br> Long Battery Life: With a 40mAh battery, enjoy up to 45 days of standby time on a single charge, making it convenient for everyday use<br> Durable and Lightweight: Weighing only 18g and designed for longevity with over 300 charge-discharge cycles, it's the perfect companion for an active lifestyle<br> Specifications:<br> Model: W5SV<br> Material: Silicone<br> Display: LED 7-segment display<br> Charging: Micro USB port<br> Voltage: DC 4.5-5.5V<br> Battery capacity: 40mAh<br> Sleep current: 25uA<br> Standby time: 45days<br> Atmospheric pressure: m860hPa~1060hPa<br> Battery life: > 300 times charge-discharge cycles<br> Weight: 18g