Large Screen Y39 Smart Wristband, Step Counting, Heart Rate, Blood Pressure Monitoring, Intelligent Reminder, IP68 Bluetooth Sports Wristband

No item number Y39, model Y39, release date: September 2019. Source category: In stock, suitable platform, fully compatible platform, Symbian compatible platform, Android compatible platform, iOS compatible platform, Windows Mobile compatible platform, Alibaba cloud OS compatible platform, Baidu cloud OS compatible platform, suitable for the general public, suitable for couples, suitable for fashion, suitable for adults, suitable for the elderly. Screen size: 0.96. Appearance size: 25010.520. Material: TPU, battery capacity: 120. Product weight: 70g. Wearing method: Wristband style operation method: Touch interface USB 2.0 wireless distance: 5m including -10m. Communication function included. Wristband material: TPU not supported Additional functions: Step counting, intelligent reminder, remote control, selfie, health monitoring, information push, sleep analysis, and OEM. The fastest shipping time is 1-3 days. Does it support mixed batch support, service store, three guarantee, invoice, no invoice, packaging list? Please explain the wristband below