Wiwu Smart Watch SW01 Ultra Max is the perfect choice for those looking for a stylish and highly-functioning smartwatch. It features up to IP68 water-resistance, 2.2” HD IPS display, and a 400mAh battery for up to 150 days of standby. The watch comes with two straps, and offers a variety of features such as SOS for help, Sleep monitor, Heart rate, Bluetooth call, Notification sync and many more. With GB4943.1-2011 and GB/T22450.1-2008 certification, it is also backed by a About this item Fashionable IP68 waterproof high-end smartwatch with up to IP68 level (1.5m deep water for 30 minutes). 2.2” HD IPS. sport modes. Features: SOS for help, Sleep monitor, Heart rate, Bluetooth call, Notification sync and many more. 2 straps included in the box. Standard: GB4943.1-2011; GB/T22450.1-2008. Watchcase: Zinc Alloy + IML. Display: 2.2” IPS, 458*518 full round display. Memory: 192KB+128MB. Charging type: Wireless charging. Battery: 400mAh. Wireless connection version: 3.0+5.0. Waterproof level: IP68. Charging time: 2.5 hours. Standby time: 150 day.