Enjoy precise time keeping and many other functions with this versatile smart watch. It has an alloy case with a silica band and has a 1.29inch IPS color screen for display. This smart watch provides function like heart rate sensor, all-day activity tracking, mobile alerts, pedometer, sleep monitor, etc. and is compatible with Android and iOS systems.

• Case material: alloy.
• Band material: silica.
• Bluetooth version: Bluetooth 4.0.
• Language: English, Português(Brasil), Português(Portuguesa),  русский, Español, Italiano, Français, Deutsch, Polish, Korean, Japanese.
• Waterproof: yes.
• Water resistant: IP67 （3 ATM waterproof）.
• Screen size: 1.29 inch.
• Screen type: IPS color display.
• Resolution: 240 x 240 pixel.   
• Compatible OS: Android and iOS.
• Compatibility: Android 4.4 / iOS 8.0 and above system.
• APP: WearHealth.
• APP language: English, Português(Brasil), Português(Portuguesa),  русский, Español, Italiano, Français, Deutsch, Polish, Korean, Japanese.
• Sensor: heart-rate monitor, proximity sensor, accelerometer.
• Heart rate: GREENCELL heart rate algorithm.
• People: female table, male table.
• Type of battery: lithium polymer battery. 
• Battery capacity: 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 mobile phone / smart bracelet, shake snapshot, multiple language support.
• Alert type: vibration.
• Precise and reliable performance. 
• Comfortable to wear all day.
• Model: Zeblaze Crystal 2.
• Suitable for wrist size: 125 - 210mm.
• Dial size: 42mm x 35.8mm x 10.3mm.
• Product weight: 34g.
• Package weight: 153g.
• Package size (L x W x H): 140 x 107 x 30mm.
• Package contents: 1 x Crystal 2, 1 x watch strap, 1 x cable, 1 x box, 1 x user manual (English, Pусский, Deutsch, Español, Italiano, Français, Japanese).