Product description1. SUPER LONG BATTERY LIFE: This Bluetooth headset has 50 mAH battery, which overcome the difficulty of battery shortage during the business trip, driving, meeting or traveling. Supporting 3-4 hours talking time and only takes around 2 hours full recharged.2.ADVANCED BLUETOOTH 4.1CONNECTIVITY: Bluetooth V4.1 and newest CSR chip technology provides quicker, more stable and wider compatibility with most Bluetooth enabled devices, including cell phones, tablets and laptops.3.SUPER CLEAR VOICE FOR HANDSFREE TALKING: This Bluetooth headset has noise-canceling microphone, which can reduce noises and enhances sound clarity for phone calls and music. Ideal for businessmen, trucker drivers and others handsfree talking in various environment.4. MUTE MICROPHONE: This Bluetooth headset has mute microphone function, when you answer phone calls, it can mute microphone by pressing the Mute button once, provides you safe conversation and meet your different call talking needs.5.RELIABLE COMFORTABLE TO WEAR: Thanks to customers suggestion, this earpiece is designed by ergonomics, it will let the earpiece fit your ear firmly, the lightweight material provide safe wearing without pain and the ears wont feel discomfort after you wear long time. Adjustable earbud fits perfectly for your left or right ear, bringing you brand-new wearing experience.