Compatible With Apple, Smart Watch I9 Wearable Bracelet Compatible With IOS System Heart Rate Bluetooth Call Color:Silicone orange 6: the corresponding finger circumference

6: the corresponding finger circumference is about 5

black belt watch + black and white double beads + box

Packing specification: OPP bag packing

Shape: round

Chain Width:2

Compatible With Apple, Smart Watch I9 Wearable Bracelet Compatible With IOS System Heart Rate Bluetooth Call Color:Silicone orange 6: the corresponding finger circumferenceNoteNon Apple branded products,Compatible with iPhone models Appearance dimension: 210 * 45 * 12 mm (total length of strap * diameter of case * thickness) Color: Black orange dark green; belt black Belt Brown Bluetooth: ble 4. 0 Call Bluetooth: ble 3. 0 Waterproof grade: IP67 Main control chip: hs6620d Acceleration sensor: sc7a20 Heart rate module: sc7r30128kb + 1m, red light + green light module support dynamic heart rate blood pressure blood oxygen