Description:Screen Amplifier with Bluetooth SpeakerHD 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 functionWhen 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.CompatibilityThis 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 SpeakerA 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: USBBattery capacity: 18650 (unincluding)Frequency response range: 100HZ-20KHZSignal to noise ratio: 70dbPower supply mode: built-in lithium batteryChannel: 2Play time: 3 hoursBluetooth protocol: 5.0Effective distance: 10 metersOperation mode: buttonShell material: plasticAppearance size: 27*21cmProduct weight: 0.7 (KG)Package Included:1*Bracket1*Charging cable1*Instruction