Goliton TS-BTIPF01 Mini Bluetooth Audio Stereo Adapter Dongle Transmitter for iPod 30pin Bluetooth version:Bluetooth V2.1 and compatible with V3.0/V4.0 and V2.0 standards. Chip: 57E6 CSR stereo chip (FLSHR board). Transmission distance: 15M (Class2) (no body and glass). The standard 30PIN APPLE interface. Frequency: 2.4 GHz.