Bluetooth Headphones, Bluetooth V4.1+EDR Wireless Headphones HD Stereo Noise Canceling Sweatproof Sport Earphones for Most Smartphones, Samsung S9/S9p/S8 Note 8/7 Latest Bluetooth 4.1 Technology: come up with advanced bluetooth technology, the headphones realize a stable and fast connection with smartphones, tablets and other Bluetooth enabled devices; It provides pure, CD-like high-fidelity stereo sound for compatible devices. Premium sound with deep bass and crystal clear treble ensure perfect listening experience. LONGEST BATTERY LIFE: The new and improved lithium polymer battery allows seamless enjoyment of music for up to 3.5 hours and 180 hours stand-by with a quick charge of only 1.5 hours. Large battery capacity of 70Mah. Noise Cancelling: Built-in HD Microphone with CVC6.0 noise cancellation technology reduces outside noises, makes you enjoy clearer microphone. Premium sound with deep bass and crystal clear treble. COMFORTABLE WEARING: uniquely ergonomic design, provide long time comfortable wearing, a convenient way to carry around when you go to gym or outdoors. Compatible with general mainstream mobile phones, like most smartphones, Samsung Galaxy S9/S9P, etc.