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Features 1-Specially designed for child 2-Small in volume, light in weight, and convenient to carry 3- Sound alarm, adjustable, alarm setting brightness! 4-Low-power consumption, continuously adjustable direction four; 5-Low voltage indicator; 6-Automatically power off in 8 seconds when there is no signal; Specification: Two color OLED display, 6 display modes; 2 parameters: SPO2, PR; Item Type: Blood Pressure Material: ABS Size: as picture shows Package Content 1 x Fingertip Oximeter 1 x Lanyard 1 x English user manual