Bluetooth Headphones, Gohitop SweatProof Wireless Bluetooth 4.1 Earbuds Noise Cancelling, Superb Sound with Mic - Great for Running, Gym, Exercise (Black0v8) COMFORTABLE: Light-Weight and Sweat Proof bluetooth headphones. As light as 18 grams. Never a burden to the ears. Rubber coating is comfortable to touch and wear, soft and skin friendly. With ergonomic design, ear hooks and rotatable earbuds makes the headsets fit your ear perfectly.Along with their rubber coating, these headsets hardly cause foreign body sensation when wearing. Friction been reduced to minimum on condition that the earbuds can fit in ears firmly when doing sports. CALL FUNCTIONS: Built-in Microphone. Picking up and hanging up phone calls. In standby mode, double-click the MF button, can redial your last call. HD SOUND: Perfectly transfer HD music. Super sound performance. Built-in microphone. Detailed voice instructions to guide you for easy using. EASY CHARGE: Built-in rechargeable Lithium-poly battery. Can last up to 7 hours while listening to music or talking on the phone. This powerful rechargeable battery has up to 180 hours of standby time. COMPATIBILITY: Comes with the recently updated Bluetooth 4.1 with enhancements in coexistence, better high quality connections, and improved faster data transfer. Bluetooth 4.1 allows devices to reconnect automatically when they are in proximity of one another. Sound great and cancel out 90% of back ground noise Easily get as loud as you need them to be Simple too set up and operate Easy Bluetooth connection Very lightweight and portable, doesn&#039;t take to much space, very easy to store in your bag, great for travel. Fits and stays in your ear nicely It features hands-free calling, have voice command for picking up / rejecting calls and control for music. You can see the battery level of the headphones on your screen (next to the Bluetooth symbol). Work great for your workouts in the gym. <span class="a-text-bold">Step 1 </span>: Press &amp; Hold Multi Function Button (MFB) for about 3 seconds <span class="a-text-bold">Step 2</span> : Open the <span class="a-text-italic"><u>Settings</u></span> in your smart phone <span class="a-text-bold">Step 4</span> : Tap headset devices name &#034;<span class="a-text-bold">Gohitop JD-103</span>&#034; to pair <span class="a-text-bold">Step 5 </span>: Connected Successfully <span class="a-text-bold">Step 6</span> : Every charge can be used 8-9 hours with light play, 4-6 hours with heavy play