Description: Screen Amplifier with Bluetooth Speaker HD acrylic lens screen magnifier with stereo sound,magnifying your phone screen 2-4 times to avoid visual fatigue.Just put the phone into the screen amplifier, you can easily enjoy the home theater-like effect. Mobile Phone Screen Amplifer with hands-free function When you connect to Bluetooth, use your phone to watch movie videos. No need to pick up your phone, just press the hands-free button to answer. You can keep to use 3D HD movie video screen amplifier to watch movie. Compatibility This mobile phone screen enlarger adopt HD zoom optical technology, no battery needed. Suitable for all smartphones, such as iPhones 11/X / 8/8 Plus / 7/7Plus /6/6s, Samsung Galaxy S7 Note 6/5/4/3 Edge Android phone smartphones. Phone screen magnifier with Speaker A Good Gift for kids, help them protect their eyes from close viewing distance.The Best Gift for the old,help them to see the screen more clear. Specifications: Interface type: USB Battery capacity: 18650 (unincluding) Frequency response range: 100HZ-20KHZ Signal to noise ratio: 70db Power supply mode: built-in lithium battery Channel: 2 Play time: 3 hours Bluetooth protocol: 5.0 Effective distance: 10 meters Operation mode: button Shell material: plastic Appearance size: 27*21cm Product weight: 0.7 (KG) Package Included: 1*Bracket 1*Charging cable 1*Instruction