Water Proof IP68 class waterproof technology diving or snorkeling can be worn to support more than 300 meters depth waterproof
Material process Ceramic ten irrigation glue process-stainless steel ten irrigation glue process
 Diameter Size " 
# 6(16.5 mm) # 7(17.4 mm) # 8(18.2 mm) # 9(19.0 mm) # 10(19.9 mm) # 11(20.7 mm) # 12(21.5 mm) # 13(22.3 mm) thickness 2.8mm"
Weight 4.5g or so
Gift box 80*80*27mm,61g
Carton size 43* 30* 40.5cm,200pcs/ctn,G.W:12.6kg
Color Bright black, bright blue, matte silver, bright gold, matte silver + medium gold, matte silver + edge gold
 Chipset (main chip model) German Dialog DA14531)-ultra-low power, more durable
Memory (ROM+RAM) 128kb ROM + 96 Kb RAM
G-Sensor SC7A20
Bluetooth Version 5.1
MobileAPP-GPS Yes
Heart rate sensor Tianyi 3602
Battery Type Polymer Pure Cobalt Battery
Operating temperature range 0-50℃
Battery Capacity 17.5mah 
Charging time Two hours
Theory Standby time 10-15 days
Normal using time 7-9 days
Charging Magnetic charging box