- Bluetooth V2.0- 2.4GHz digital wireless?tramission- Built-in FM radio tuner: 87.5~108Mhz- Supports A2DP stereo profile- Recharges in 1.5 hours (manufacturer rated)<br />-?Talk/music time per charge:?4 hours (manufacturer rated)<br />-?Stand by time per charge:?200 hours (manufacturer rated)<br />- Stereo earphones and 100V~240V AC adapter included<br />- Bluetooth V2.0- 2.4GHz digital wireless?tramission- Built-in FM radio tuner: 87.5~108Mhz- Supports A2DP stereo profile- Recharges in 1.5 hours (manufacturer rated)<br />-?Talk/music time per charge:?4 hours (manufacturer rated)<br />-?Stand by time per charge:?200 hours (manufacturer rated)<br />- Stereo earphones and 100V~240V AC adapter included                                                                                                                                Dimensions: 2.05 in x 0.94 in x 0.55 in<br />Weight: 5.64 oz