What's in the box:

Blood Oxygen Monitor Fast Reading Finger Pulse Oximeter Mini SpO2 Monitor Oxygen Saturation Monitor Measuring Gauge Device (Standard)

Features:
Multi-function: Digital pulse oximeter can be used to measure pulse rate, blood oxygen saturation levels accurately.
Easy to Read: Support SPO2, pulse, you can view your result very clear with LED display.
Easy to Use: Accurate and reliable, one-button operation, just clip it on to your finger and turn it on at the press of a button. Automatic power off after 8s when not in use.
Widely Applicable: Suitable for everyday use. Widely used in family, oxygen bar, physical care in sports, etc.
Compact Size: The oximeter is lightweight and portable.

Specifications:
Project: pulse oximeter
Hemoglobin saturation display: 35-100%
Pulse rate display: 25-250 BPM
Resolving power:
Hemoglobin saturation: 1%
Pulse: 1 BPM
Perfusion index: 0.1%
Measurement accuracy:
Hemoglobin saturation: 2% (80% - 100%); 3% (70% - 80%); unspecified ( 70%)
Pulse: 2 BPM
Perfusion index: 1% (0-20%); unspecified (20% - 30%)
Operating temperature: 5 C to 40 C
Storage temperature: - 20 C to 55 C
Relative humidity: 15% to 85% non condensing
Test result: 5S
Automatic shutdown: 8s
Battery: 2 * AAA (not included)
Package size: 6 * 3.2 * 3.5cm
Package weight: approx.50g

Packing list:
1 * Pulse oximeter
1*Lanyard
1 * User Manual