Bluetooth Headphones, Wireless Bluetooth Headphones, Sweatproof Neckband Wireless Headset V4.1 Call Vibrate 18hrs TalkingTime with Retractable Earphone Compatible for iPhoneX, Samsung Galaxy - Black Pickup only New never used Ultra Long Working Time Charging Time：around 3.5 hours Music Time：near 16 hours Talking Time：near 18 hours Standby Time：near 300 hours Package content 1*Wireless Bluetooth Headphones 1*USB cable 2*Pairs of Earbud [Foldable & Retractable Headset] Retractable earbuds with individual button, easy to adjust the cable length just by one press to retract the earbuds. The foldable design is convenient to carry it in your bag and save your space when outdoor and travel. [Outstanding Battery Life] Only charging up to 3.5hours, it can support 300 hours standby time, 18 hours talking time / 16 hours music time. Let’s enjoy your wireless music and sport time. [Bluetooth 4.1 Technology] Bluetooth 4.1 technology ensures fast pairing speed and stable connection. HD Stereo Sound, Built-in HD Microphone, enables clearer headset and mic sound and music and talking. Stereo Music Sound and Strong Signal. Effective distance up to 32ft/393in without barrier. [Vibration for Incoming Call] When there is an incoming call or pairing successfully the headset will prompt with vibration. You will not miss any phone call when doing exercise or even in a Noisy situation. [Powerful Compatibility] Compatibily with most of bluetooth enable device,such as iPhoneX /iphone8, Samsung Galaxy 9 / Note8 / C9 Pro / Huawei P10, iPad, iPod, TV, Tablet, Computer, etc.