Size: 45*38*12.3mm Strap Material: Silica gel Main screen: 1.75 inch HD IPS 240*240 pixels Charging mode: Magnetic Charging Touch screen: Full touch screen Waterproof: IP67 life waterproof ROM: 128MB Battery Capacity: 220 - 300mAh The watch is not water proof and neither the sensors are 100% accurate for medical purpose. So please ask any question before order the product. This watch is student/budget friendly. better than Series 8 T500 T500+pro T100 plus s8 pro max i7 pro max i7 series 7 ultra watch T800 T900 fitpro and many smartbands d18 d20 General Features SIM Support N/A Dimensions 11 × 11 × 11 cm Strap Material Silicon Water Resistant IP67 Weight 0.5 kg Operating System Proprietary OS Speaker Yes Modes Multiple sports modes Display Camera N/A Screen Size 1.75 inches Screen Resolution N/A Screen Type IPS LCD Memory Ram N/A Rom N/A Connectivity Wifi N/A GPS N/A NFC No Battery Capacity 280 mAh Battery Life 3-4 days Return Policy:7-Days Return (Change of mind isn't applicable)No-warranty