*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 & 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 & 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: φ8mm Frequency Range: 2.4026GHZ-2.480GHZ Transmission Class: class 2 Transmission Distance: ≤ 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: 16Ω 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 size: 10 x 16.5 x 3 cm/3.94”×6.5” x 1.18” (L×W×H) Package weight: 77g/0.17lbs *Package Lists*: 1 × Stylish Sport Wireless Stereo Earphones 1 × USB Charging Cable 1 × Pair of Small Size Earcaps 1 × Pair of Large Size Earcaps 1 × Pair of Wingtips 1 × Cable Clip 1 × User Manual