Oxygen Concentrator - Model: OX-Plus - Brand: UNICOM - Function: Oxygen Analyzer - Power: 3 AAA batteries - Display: Digital display - Measurement Range: 0-100% O2 Purchased in March 2024. It has been stored unused. The slight haze visible on the left side of the LCD is due to a small portion of the protective film peeling off when wiped. There are no scratches on the LCD screen itself. The batteries currently installed will be included and shipped with the device. Please purchase only if you understand that this is a used item. If purchased by 4 PM, I can drop it off at Yamato Transport on the same day. Instant purchase is welcome. No comments needed. Price is not negotiable.