The perfect companion for iPod Video, the Relaxsee offers users the ability take their favorite TV shows and movies anywhere in all of their wide-screen glory. Relaxsee Video Glasses offer you a 80-inch virtual screen that fits like a pair of glasses. It is ultra lightweight. With built-in earphones, an 4-5 hours rechargeable Lithium ion battery pack. There comes with multimedia player with 4GB memory onboard, also support SD/MMC card up to 8GB. With RM, RMVB video formats complicant, can playback directly.Watch movies connect with X-BOX, Playstation, 3G phones, PC, MP4, PMP, portable DVD & car DVD player Complicant with MPEG4(AVI), RM, RMVB video formats, playback directly E-book and bookmark Support AV-OUT/AV-IN, compatible with NTSC/PAL/SECAM system. Multiple languages, Win98SE/2000/XP OS. Comes with MP4 player Mobile U disk function 4GB memory onboard, support SD/MMC card up to 8GB Powerful li-ion battery, fully charged can last 4-5 hours.