Chipset: CSR                                                            Bluetooth version: Version 2.0/Class2 Operating Distance: 10 Metres Weight: Less than 13 grams Range of Frequency: 2.4GHz Spectrum Dimension: 58mm(L) X 20mm(W) X17 mm(H) Talk time: Up to 5 hours talk-time Standby time: Up to 100 hours Nominal charging time: Within 3 hours Ear compatibility - Adjustable for both left and right ear. Battery - Rechargeable Li-polymer battery Â