Bluetooth version: V4.1 Charging: Power adapter output (DC5V 150mAh) Battery indicator: a high-performance lithium polymer battery Bluetooth indicators: Class 2 Support Agreement: Headset / handsfree / A2DP / AVRCP Talk time: 8 hours IPX5 waterproof professional sports headset, enjoy sports anytime, even in raining days. Bluetooth CSR 4.1 chip, high speed transmission. CVC noise cancelling, crazy music enjoying. Multi-point connection, pair two devices at the same time. Drive units made for pure sound, perfect sound and talk. Built-in Lithium battery, super long work and standby time. DACOM Waterproof headphones are a great wireless solution to for today's music lover. They can get wet without breaking so you don't have to worry about rain or sweat, using them around the pool, or even spilling your drink on them. Brand No Brand SKU OT776EL1MEBPWNAFAMZ-261855 connector_1 3.5MM Wearing type Over the Ear wireless_connectivity Bluetooth