Bluetooth Headphones,Souldio&trade;Wireless Headphone Bluetooth Sports Earbuds Stereo Noise Cancelling Headphone Retractable Sweatproof Headsets/Earbuds/Earphones with Mic(Black) Comfortable and Adjustable Earhooks: The bluetooth earbuds adopted ergonomic and adjustable ear hooks, the connection part between the earhook and body can extend up or down by 3 mm.the speaker mounting bracket can rotate 60 degrees to the left and right. it also can be adjusted at the ear up and down by 60 degrees as you need Sweat Resistant and Waterproof: Built for your exercise active life,the sport bluetooth earbuds are rated IPX level 4 and can withstand dripping sweat and water, ergonomic design optimized for ultimate wearing comfort to match your sports in gym and other outdoor exercises,any problems about the bluetooth earphones can contact us and provided 30 money back 12 months warranty Bluetooth 4.1: This S380 sports headphones support to connect two devices simultaneously and allow automatically connecting after paired successfully at the first time,and provide stable signals and bluetooth connecting in 10 meters,the sports bluetooth headphones are compatible with most cell phones,iPhone,Android,PC,and bluetooth devices Bluetooth aptx + CSR: The sports bluetooth earphones with aptx codec and adopt CSR chips provided high-fidelity stereo sound quality perfectly for your most strenuous exercises in gym and outdoors running,jogging,walking,climbing,cycling CVC Noice Cancellation and Powerful Battery: The sports bluetooth headphones cvc 6.0 noice cancellation technology guaranteed HD stereo bass sound and clear talking,also inbuilt polymer lithium battery(120mAh),up to 240 hours of standby time, 6.5 hours of talkking time, 6 hours of continuous music playing only 2 hours charging time long working for you