CCK KS bluetooth 4.1 In-ear Wireless Long Lasting HD Sport Sweatproof Stereo Earphone with Mic

Features: The cck bluetooth v4.1 sport earphone carefully built in-ear design can effectively stop outside noise to bring you clear and pure sound. The sound is more intensive in the front cavity and bass is strengthened in the back cavity, what you hear is balanced and natural sound. With excellent low frequency an and clear human voice, it will bring you high-quality sound through your workout. It can continuously play music for 5 hours. Specifications: bluetooth version 4.1 Transmission frequency 2.4GHz-2.48GHz bluetooth operating range Up to 33 feet(free space) bluetooth profiles A2DP,AVRCP,HSP,HFP Frequency response 20Hz-20Khz bluetooth music/talk time About 5 hours Standby time About 120hours Charging time About 2 hours Operating temperature -10-50 Output power 6mW+6mW Wired Control Support Earphone Type In-ear Microphone Yes Package Included: 1 x User Manual 1 x Pouch for Cable 3 x Ear Hooks(S, M, L) 1 x USB Charging Cable 1 x Ear Tips