Filters & Screens descriptions We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Bluetooth Programable Led Name Badge Case With Magnet And Pin. Specifications: Pixel Pitch: 11*55 Pixel / 1.77mm Pitch Display Speed 8 Level: Level 1 Slowest to Level 8 Fastest Screen Size: 93*23mm Display Model: Freze, Up and Down, Left and Right, Snow, Laser, Twinkle, Picture, Animation, Flashing € ? Frame Size: 98*26.5*7mm Memory: 750 English Character or Equivelant Message Language: USB Function Support Global Language, App Support Chinese, English, Japanese, Korean Battery: 210mAh @ 3.7V, 2hours for Full Charge Working Time: 12 - 24 Hours, Depends on Brightness How ToProgram:1.Cellphone Bluetooth App (Support Apple and Andriod ) Computer Program(Support Windows XP and Above) . Products number : SOMONO81590