Safety standards:
Electric shock proof: internal power supply
Degree of electric shock proof: BF
Immersion protection grade: IP*1

Size and weight:
Size: 66*30*25(L*W*H)mm( finger)
     69*32*24(L*W*H)mm( finger)
Weight: Around 36g with battery (finger series)
       Around 40g with battery(finger series)

Adaptable working condition.
Temp: 5-40℃
Humidity: 30%-80% ( no condensation)

Trasportation and storage condition:
Temp: -20-60%
Humidity: 10%-95% ( no condensation)

Configuration:
Display screen: 0.96” Dual –color OLED
Wireless module: Bluetooth of 4.0
Battery: rechargeable
       Lithium-ion battery
       Less than 2h charging time
 Battery time is access to 20h
Charging interface: Micro-USB

SPO2
Range : 0-100%
Accuracy: ±2% when range in 70-100%
Resolution: 1%
Data update frequency: 1s

PR
Range: 18-250bpm
Accuracy: ±3bpm when range in 25-250bpm
Resolution : 1 bpm
Data update frequency: 1s