Blurex Wireless Bluetooth Music Receiver For ipod Touch Ipad and Iphone with built in Battery Receiver lets you listen to music from your iPhone/iPod touch on your stereo wirelessly Built-in rechargeable battery provides up to 6.5 hours of listening almost anywhere (Includes Optional Power supply cable) Compact, integrated design requires no external antenna Effective range: 20 m (65.6 ft.); 748 kbps data rate Bluetooth standards: V 2.1, Class 2 and A2DP