Model No ROCKER THUNDER TWINS BUDS Product Earbuds Connectivity Bluetooth Key Feature Bluetooth Technology: Bluetooth 4.2 Bluetooth? Profiles: A2DP 1.3, Hands Free (HFP) 1.6, AVRCP 1.5, HSP 1.2 Range: Up to 33ft (3 mtr.) Premium HD speakers: High Quality Sound with Audio Enhancement DESIGN: Premium Finish Earbud: 20.5mm x 19.7mm x 26.3mm Dock: 80mm x 69.5mm x 33mm Earbud: 7g Dock: 77g Connector Port: Micro USB Play Time: Up to 16 hours with charging Case Talk Time: Up to 16 hours with charging case Standby Time: 150 hours Note: Battery time is approximate and depends on network configuration, signal strength, operating temperature, voice and data mix, and features selected. Warranty 1 Year from Zoook Service Center