Product Dimensions: 3.94x6.5x1.18 inch Highlights: 1.Crystal Clear Sound Details: *Features*:**Sport Stylish Headsets*:Adopt advanced CSR chipset,noise cancellation technology and high sensitive microphone to deliver HD immersive stereo sound when exercising. 3-size ear tips fit securely in your ear canal and form a general seal for additional passive noise reduction. 1pair of ear wings help to fit securely and comfortably on your ears when you are workout.**Crystal Clear Sound*:Latest Wireless 4.1version with multi-point technology,simultaneously connect with 2 mobile devices with high quality and high speed signal transmitting,offering impressive crystal clear stereo sound and stable connectivity. Adopt high-sensitive microphone with CVC6.0 noise cancellation technology to reduce ambient noise,grasp the details of voice and offer crystal clear sound even in a noisy environment.**Multi-use &amp; Easy Operations*:Featured with MFB(Multiple function button) panel,simply and quickly fulfill almost all functions like answer/end a phone,play/pause,pairing,power on/off/redial,etc.. Easy operation and brings you much convenience.**5Hrs Unstoppable Music and 2 Hrs Fully Charged*:Inbuilt with 60mAh rechargeable battery and equipped with USB charging cable,5Hrs unstoppable HD sound music while only 2 Hrs fully be charged.*IPX4 WATERPROOF &amp; MAGNETIC EARTIPBUDS CLOSURE:IPX4 Sweat-proof to protect our headsets from corrosion. Tangle-free flat cable rest comfortably around neck with magnetic earbuds closures. *Specifications*:Product Type: Wireless Sport Earphones Wireless Version: CSR8635 V4.1 Driver: &phi;8mm Frequency Range: 2.4026GHZ-2.480GHZ Transmission Class: class 2 Transmission Distance: &le; 32ft Protocols Supported: HSP, HFP, A2DP, AVRCP Play Time: 5 hours Talk Time: 5 hours Standby Time: 180 hours Charge Time: 1-2 hours Input: DC 5V 300mA Output Power: 10mw Sensitivity: 98db Impedance: 16&Omega; Waterproof Performance: IPX4 Materials: Aluminum Alloy, TPE Wire Frequency Response: 20Hz-22KHz Battery: built-in rechargeable 3.7V 60mAh li-polymer battery Weight: 13g/0.47oz Color: Red *Package Lists*:1 &times; Stylish Sport Wireless Stereo Earphones 1 &times; USB Charging Cable 1 &times; Pair of Small Size Earcaps 1 &times; Pair of Large Size Earcaps 1 &times; Pair of Wingtips 1 &times; Cable Clip 1 &times; User Manual

Sport Headsets Wireless V4.1 In-Ear Stereo Headphones Sweat-proof Running Earphones