DUKEAI F1 Wireless Headphone

Overview: F1 wireless BT headphone brings you perfect music enjoyment. It supports hands-free calling, multi-point connection, vibration alert, bringing convenience in your life. Collar clip and flexible pulling design, no kinking, easy to carry and store. Built-in Mic: Built-in microphone with noise reduction enhances call audio transmission performance, clear voice transmission. Hands-free & Multi-point: Hands-free calling function sets your hands free and ensures driving safty. It can simultaneously connect to two smart phones. Collar Clip & Retractable Earbud: Collar clip design, very easy to carry. The headphone head is retractable, making cable in order, no kinking and easy to store. Duration Time: Built-in reable 95mAh battery provides up to 6 hours of taing time, 5.5 hours of music time and about 150 hours of standby time. Vibration Alert: Supports vibration alert function. No worry about losing your smart phone. Specifications: Brand: Model: F1 BT Version: V5.0 Support Protocol: HSP, HFP, A2DP, AVRCP Transmission Distance: 10 meters (in the open air) Frequency Response: 20Hz-20KHz Sensitivity: 88dB Impedance: 16ohm Battery Capacity: 95mAh Taing time: about 6 hours Music Time: about 5.5 hours (depends on music volume) Standby Time: about 150 hours Charging Time: about 2 hours Color: Black, White (Optional) Main Item Size: Approx. 3.6 * 3.6 * 1.7cm / 1.41 * 1.41 * 0.67in Main Item Weight: 21g / 0.75oz Package Size: 9.2 * 9.0 * 3.7cm / 3.62 * 3.54 * 1.45in Package Weight: 62g / 2.16oz Package List: 1 * Clip-on Headphone 1 * USB Cable 1 * Pair of Earcap 1 * User Manual (English / Chinese)