Reflex Active Series 1 Smart Watch Fitness Tracker Android IOS. Activity tracker with colour touch screen Easy charging with USB charger cradle. Soft silicone adjustable strap. Connectivity Multi-platform operating system. Bluetooth 5 connection. Display information 18mm LCD screen. Touchscreen. Battery Size: one size. Watch size H45, W18, D12mm. Strap size L195, W18, T3mm. Strap can be removed and replaced. Comes without any box And no instructions But we have added the instructions on the pictures for you or you can download it of there website