Purchased for COVID-19 countermeasures at a welfare facility, but became unnecessary as only one was used and disinfected. Features: 1. High-speed and accurate infrared precision, high-performance acceleration sensor, and a short measurement time, taking only 8 seconds to display parameters. 2. Silicone finger pad for more comfortable wear. 3. One-piece measurement, no complicated operations required. Specifications: Weight: 0.045kg Size: 7.7cm * 5.7cm * 3.7cm Package includes: 1 * Finger Clip Pulse Oximeter Two AAA alkaline batteries (sold separately) The box and instruction manual have been discarded. *For home use, non-medical use.*