Features Stereo Sound Designed for an excellent listening experience, Zihnic Bluetooth headset around-ear cushion design can provide robust, immersive and Hi-fidelity sound. Compatibility The Bluetooth headset can easily and quickly connect with smartphones, tablets, TVs (with Bluetooth )and other Bluetooth devices within 33 feet, bringing you crystal clear sound effect. Adjustable Headband The headphones offer not only sleek style with a slim profile but also an adjustable contoured headband, it allows you to get a great position on your head. Warranty 24-month warranty and quick response & friendly customer service. Specification Product Type: Bluetooth Headset Wear style: head wear Functional use: wireless headphones Bluetooth version: V5.0 Support Bluetooth mode: a2dp\\avctp\\avdtp\\avrcp\\hfp\\spp\\smp\\att\\gap\\gatt\\rfcomm\\sdp\\l2cap Range: 33 feet (10 meters) Power indicator: blue light Battery Capacity: 450mAh Normal charging time: about 2.5 hours Play Time: Around20 hours Talk time: Around 14hours Standby time: Around 350 hours Other features: support status indicator, charge indicator display What\'s in the box 1* Bluetooth Headset 1*USB Cable 1*Audio Cable 1*User Manual 1*Premium Case