Fingertip Pulse Oximeter Blood Oxygen Saturation & Heart Rate Monitor with Lanyard 2-way OLED Display Digital SpO2 Monitor Detection Mini Pulse Oximeter Auto-off Efficient oximeter easy e, simply insert your finger into the chamber then it will accurately determine your SpO2 and pulse rate in seconds. Small, portable and low power consumption. Equipped with lanyard convenient to carry around. Features: Accurate oximeter determines your blood oxygen saturation levels and pulse rate. 2-way rotating display, convenient for user and caregiver to check throught one press power button. Automatically shut off in seconds if there is no operation, energy saving. Built-in silicone membrane, non-slip, sweatproof and comfortable. OLED screen with large color digit simple to read, even child and elder can use it with ease. Comes with lanyard for easy carry and can be hung anywhere you need. Specifications: Material: ABS Color: White & Blue Display Type: OLED Display Direction: 2-way SpO2 Resolution: ±1% SpO2 Measurement Range: 70%-100% SpO2 Measurement Accuracy: 70%-100%: ±2%; <70%: no Definition PR Measurement Range: 25BPM-250BPM PR Measurement Accuracy: ±2BPM Power Supply: 2 * AAA Batteries (NOT INCLUDED) Item Size: 55 * 30 * 31mm / 2.16 * 1.18 * 1.22in Item Weight: 24g / 0.85oz Package Size: 7.7 * 5.5 * 3.5cm / 3.0 * 2.2 * 1.4in Package Weight: 35g / 1.22oz Package List: 1 * Oximeter 1 * Lanyard 1 * Manual