LED Eye Test Chart, Rechargeable Vision Chart with Double-Sided Display and Brightness Adjustable, Measuring Distance: Front 30cm/Reverse 25cm for Hospital, Optical Shops

Product specifications:Name: LED eye chart light boxWhite background average brightness: 80-320CD, m²White background brightness uniformity: >0.85Charger broadband input voltage: AC 100~240VOutput voltage: 4.2V 0.5AMeasuring distance: front 30CM/back 25CMRecording method of vision: decimal record/5-point recordPackage weight: 0.445KGSize: 213*120*15mmPacking list:near eye chart *1charging head *1charging cable *1lithium battery *1base *1pendant screw*1Note:1. Due to the different colors of the brightness of the display and the light, the actual color may be slightly different from the picture.2. Due to manual measurement, please allow a 0-2cm error. Thanks for your understanding.

• 【Brightness Adjustable】Remotely control the eye chart to adjust the light according to the surrounding environment, light, etc., with low power consumption, simple and convenient. Provides consistent, bright illumination to ensure accurate vision testing, ideal for both professional and personal use.
• 【Brightness Adjustable】The brightness of this eye chart can be adjusted. The switch is located on the side of the device, and you can adjust it to the appropriate brightness according to your needs.
• 【Easy to Measure】Easy to measure vision up to 14 inches from the observer, providing a distance equivalent to 20/800 to 20/20, you can use it to conveniently monitor your child's and your vision.
• 【LED Eye Chart】Energy-efficient LED display screen, made of high-quality materials, safe, reliable and durable, no reflection and no glare effect, it is an ideal eye chart for children's eye exams and gifts.
• 【Best Choice】Perfect eye care gift for optometrists, eye care specialists, ophthalmologists, eye care providers, opticians, eyewear manufacturers, etc., great for kids, students, home, office and school use.