Introducing WiWU Smart Watch SW01 S9 Wireless Bluetooth Watch, the ultimate wearable technology for staying connected on-the-go. Receive notifications, track your fitness, and control your music all from your wrist. With wireless Bluetooth connectivity, this watch is perfect for any active lifestyle. About this item Chips:SF32LB551, App Wearfit pro Bluetooth: V5.0+3.0 Material: Aluminum alloy+ IML Waterproop IPX 68 Net weight: 54.8g(with watch band) Screen size: 2.02 inch 320*390 pixel Battery: 300mAh, 3.7V charging time 2.5H, Working time