Product DescriptionColor: Black WhiteWant more concentrate and enjoy your exercise? Let's get ready for workouts with Bluedio S2 Sports Bluetooth Headset! S2 is crafted from its streamlined appearance， superb bass resonance with 3rd generation in-ear earphone， wind noise reduction， sweat-proof， Bluetooth 4.0 and voice command features， to give you superior enjoy on workouts!S3 is wireless and humanized for you. Connect to 2 phones simultaneously. Voice command say “Yes” or “No” decide whether to pick a call; Press MF button 2 seconds， then release， to activate voice assistant of mobile phone， e.g. Siri(Phone feature); last but not the end， press MF button and Vol(-) simultaneously to choose voice promts(Chinese/English).Feature:1.Reproduced true sound: Crafted with 10mm dynamic drivers， and CCAW voice coil from Japan， it created surprising full-bodied timbre， clear and bright， better transient response， restore true sound of your favourite singer， try listen to “Love knockdown” by Kanye West. 2.Leading new by Bluetooth 4.1: Incorporate high speed 80MIPS Kalimba CPU and 80MHz RISC MCU Bluetooth 4.1 chipset of CSR from the UK， S3 is tough enough for stable high speed operation. 3.Ultra HD voice: Sample rate of S3 has dramatically expanded from 8kHz to 16kHz， speech frequencies expanded from 280Hz-4kHz to 50Hz-6.1kHz， far beyond band limits caused by mobile network and Bluetooth link， it means that narrow band era has come to an end， ultra HD wideband speech has come to your world.(*telecommunication network support is needed) 4.6th generation CVC noise reduction: Significantly improves receive path voice signal by sophisticated algorithm technology and altering the spectral shape of the receive path signal， which AEQ estimate near-end noise， improves far-end voice frequencies; WNR remove unwanted noise during a hands free conversation， cleaning the audio for far-end listener.(*this is not active noise cancellation) 5.t-Light earbuds: Tight and light for more comfortable wearing. Superior sound isolation by silicone eartips， ergonomically designed to provide comfort in your ear. S3 also effectively prevent sweat and rain to interfere with headset operation.Specification: Bluetooth version: V4.0Frequency range: 2.4GHz-2.48GHzOperating distance: up to 10m (free space) Bluetooth profiles: A2DP、AVRCP、HSP、HFPStandby time: up to 180hrsTalk/music playtime: about 5 hoursCharging time: about 2 hoursFrequency response: 20Hz-20kHzOperational temperature: -10 to 50°CAccessories: S2 BT sports headset 1pcUSB charging cable 1pcUser manual 1pc