Fangrui Product Details Dont Support Tv 3d Built-in High-capacity Rechargeable Battery Auto Power-off Function, Energy Efficiency. Rechargeable, Micro-usb, More Convenient. User-friendly Electronic Circuit Design One Single Button, Easy Operation. Cool Appearance, Light Design, Comfortable To Wear Without Dizziness. High-speed Response Of High-quality Liquid Crystal Lenses, Prevent From Eye Strain. The Appearance Of Innovative Treatment Process, To Eliminate Electromagnetic Interference. The Frame Using Abs + Pc Material, Low Energy, Low Carbon And Environmental Protection. High Permeability Rate Of Quality, No Flash Smelting, No Blur. With Auto Power-off Function, Stability, Energy-efficient Low-power Self-detected Function, Low Battery Led Flashes To Prompt The User When The Battery Is Low. Technical Specifications: Charge Time: 2-3hours Continuous Use: 50hours One Time Field Frequency: 96hz-144hz Mittance: Dont Support Tv 3d Cleaning Cloth And Glasses Bag Come In Random Colors, Not Accepting Designation Color