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Technical Features: Display SpO 2 , PR - Battery Type: 3.7v (1000mAh) Rechargeable Lithium Batteries - Free App: Berry Smart Health - Working Voltage: DC 3.4v ~ DC 4.3v - SpO 2 : Measurement range: 35% - 100% Accuracy: ±2% (80% - 100%) ；±3% (70% - 79%) - Pulse Rate: Measurement range: 25 - 250bpm Accuracy: ±2bpm
78pcs/carton Carton size:47x44x44cm
