My-V033-D Coming Portable Autorefractometer Portable Refractor Spot Vision Screener. Portable & Lightweight Design: Weighs only 1.2kg with a 5.5-inch HD screen, ideal for spot vision screening. Long Battery Life: Equipped with a rechargeable battery offering over 5 hours of continuous usage. Fast Detection Speed: Detection time is less than 0.4 seconds, ensuring efficient workflow. Multi-Interface Connectivity: Supports WiFi, Bluetooth, and USB for data transfer and printing. User-Friendly Attraction Mode: Features music and animation to engage patients during screening. OEM/ODM Customization: Supports full customization, minor customization, and flexible design options. 100% Quality Inspection: Every unit undergoes visual and functional inspection before shipment.