Caution: color: we send according to the color of the first picture, in the package: if the quantity is not stated in the description, we will shlp the item according to the quantity and model in the title.
Waterproof heart rate long battery life color display screen multi sports modes fitness tracker smart watch| smart watches black water resistant: ip67 waterproof screen size: 1.3 Inch color¡êoblack screen type: ips color display screen resolution: 240*240pixel compatible os: android & ios compatability: android 4.4 / Ios 9.0 And above system app name: wearhealth sensor: heart-rate sensor,proximity sensor,accelerometer heart rate: greencell heart rate algorithm type of battery: lithium polymer battery battery capacty: 180mah standby time: 168 hours charging time: about 1.5 Hours standout features: greencell heart rate algorithm, all-day activity tracking, multi-sensors, mobile alerts, pedometer, sleep monitor, run route tracking, stopwatch, information / telephone reminder, find phone / smart bracelet, multiple language support.