Specifications: Video Glasses: - Resolution: 432 X 240 - Aspect Ratio: 4:3 - Simulated Display Size: 52 inches Memory: - Internal: Built-in 2GB Flash Memory - External: Micro SD / TF Card up to 32GB (not included) Compatible Media Formats: -Movies: RM/FLV -Photos: JPEG, BMP, GIF - Audio: MP3, WAV, FLAC, APE - eBook: TXT Connections/Inputs/Outputs: -Micro USB -DC IN -Earphones (bult-in)Micro SD Card Slot Power Source: Rechargeable 500 mAh battery Battery Life: About 4-5 hours depending on use USB: 2.0 high speed Operating System Compatibility for USB Transfer: Windows XP/ Windows7 (32 bit versions only) Dimensions Video Glasses: 15.2 x 3.0 x 3.0cm/6.0 x 1.2 x 1.2in OSD Language: English, Chinese (Simplified), Chinese (Traditional), German, Italian, Portuguese, Dutch, French, Spanish, Polish, Russian, Turkish, Czech, Danish, Japanese, Swedish, Korean, Greek, Thai, Hebrew