Alsisk,Dual Battery Bluetooth Sport Magnetic Headphone,Wireless Earphones,Earbuds with Mic IPX3,Waterproof Sweatproof HD Stereo,12 Hour Working Time Noice Cancelling Sports Headset (Elegant Black) Super Sound Quality+Aptx:High-Fidelity Stereo Sound Quality with Aptx Codec and CSR8645 Bluetoth Chipset.These headphones are compatible with most smartphones,iPhone and Android Phone. Long-Lasting Usage&Built-in Magnetic Design:Up to 10 hours talk time / music time (Play time varies according to volume level and audio content).It also has up to 600 hours of standby time and charges in 2 hours.You can attach the two headphones together when not using,and wear like a necklace around your neck,a convenient way to carry around when you don't need them. Customizable Accessories:The Bluetooth earbuds come with customizable accessories,And you wont feel hurt even for an whole day wearing with silicone materials and ergonomics ear hooks design.The ear bag could ensure your earphones le Accessories: The Bluetooth earbuds come with customizable accessories,And you wont feel hurt even for an whole day wearing with silicone materials and ergonomics ear hooks design.The ear bag could ensure your earphones portable,convenience and tidiness. Sweat Resistant:Built for your active lifestyle - these earbuds are rated IPX 3 and can withstand dripping sweat.Ergonomic design allows for ultimate wearing comfort to match your active lifestyle like running,jogging,cycling,driving,camping,hiking,gym exercise and other outdoor sports. In-line Mic and Volume Control:The headset has an in-line mic and volume control buttons,perfect for answering calls or listening.Tips:When charging with a charging adapter,please make sure the current should not be greater than 1A.provides 12 months hassle-free warranty to ensure the enjoyment of your purchase.