IP5724B Features High fidelity stereo Wireless Bluetooth audio receiver that connects to the standard 30 pin slot Plug and play capability Built-in LED lights Operating range is up to 20 meters in open area without obstacle General Specs Brand & Model TS-BTIP03 Chip OVC3860 stero sound chip or CSR8645 Dual stereo Bluetooth V2.0， compatible with device supporting Bluetooth V2.0 or below Bluetooth Protocol 2DP HSP HFP OPP OBEX DUN Frequency Response 2.4GHZ-2.4835GHZ Transmission Range 20 m(in open area without obstacle) Ports Standard APPLE 30PIN Voltage & Current 3.3～4.2V/30mA Compatibility  Philips， BOES， yamaha， JBL， JVC， SONY， panasonic， qi Berlin， Jacques's， and other international brands of Apple Universal Dock speaker Package Details Weight: 25.68 g Size: 12.5*10*2 cm