Supports iPod mini, iPod nano, iPod video, and other compatible devices. Transmits clear stereo o signals to any Bluetooth-enabled receiving device. No software setup required; easy to use. Supports paired Bluetooth stereo headsets or earphones for play/pause, forward/backward control. Features automatic pairing (no button press required) and automatic standby mode. Standby mode activates when no Bluetooth headset or earphone is detected within a set time, helping conserve power. Compatible with 30-pin dock connectors. Color: Black Material: Plastic Size: 4 x 4 x 0.8 cm Package Contents: 1 x Bluetooth Transmitter Note: Light shooting and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.