Carolado - Model YK-81C/D - Fingertip Pulse Oximeter

Color : White, Golden, Black. Dual color OLED displays SpO2, PR, waveform, Pulse bar; 4-direction & 6-mode display provide convenient readings; Setting alarm range of Spo2 and pulse rate. Menu- function setting (Beep sounds, etc). 2pcs AAA-size alkaline batteries; automatically power off; USD data transfer (Option). Dimension: 58mm*35mm*30mm. Weight (without battery): 33g. Power Requirements: 2pcs AAA-size alkaline batteries.