The Jabees BSport Bluetooth sports headphones can handle your rigorous workouts with its sweat, dust and shock resistance. Better sound makes better performance. With aptX delivers 16 bit and 44.1kHz CD-quality music over Bluetooth wirelessly, and 10mm ultra large neodymium dynamic speaker construct superb smooth bass resonate. The refined engineering design with removable safe-hook of the in-ear headphone allows you to focus on your workout, never worry of fall-out and create ultimate comfortable user experience. The dual microphones deliver superb wind reduction and crystal clear calls. So go ahead, move, sweat and rock hard. Sweat-proof designed to withstand the most intensive workout conditions, and NFC makes easiest connection with mobile phone. Extra humanized functions such as caller phone number announce, connect with 2 phones simultaneously, battery meter on iOS devices, English voice prompt, voice dialing/redialing and support VOIP connect with computer for online chat. Specification - Bluetooth version: Latest CSR V4.0 with apt-X technology and NFC - Frequency range: 2.4GHz-2.48GHz - Operating distance: Up to 33ft (10m) - Bluetooth profiles: A2DP/AVRCP/HSP/HFP - Waterproof Rating: IPX4- Battery: 3.7V 90mA Lithium polymer rechargeable battery- apt-X Technology: Delivers CD-quality music over Bluetooth- NFC for quick connection- Dual-Mic.- Voice Prompt in 4 languages- Standby time: up to 100hrs - Talk/music playtime: about 6 hours - Charging time: about 2 hours - Frequency response: 20Hz-20kHz - Product dimension: 33.07 X 24.17 X 31.15mm - Weight: 20g - Operating temperature: -10 to 50 DegreeC - What's in the box 1 X Jabees BSport Bluetooth headphone 1 X Pouch 2 X Safe-hook (S,L) 3 X Earbuds(S.M.L) 1 X USB charging cable 1 X User manual