Zeimax New Version Bluetooth 4.1 Headphone Q2 supports A2DP&iexcl;&cent;AVRCP&iexcl;&cent;HSP&iexcl;&cent;HFP for Mobile Phone ,with CCAW voice coil from Japan GENUINE Zeimax PRODUCTS ,Don't buy fakes from unauthorized sellers. Reproduced true sound: Crafted with 10mm dynamic drivers, and CCAW voice coil from Japan, it created surprising full-bodied timbre, clear and bright, restore true sound of your favorite singer. Leading new era by Bluetooth 4.1: Incorporate high speed 80MIPS Kalimba CPU and 80MHz RISC MCU Bluetooth 4.1 chipset of CSR from the UK, Q2 is tough enough for stable high speed operation. Ultra HD voice: Sample rate of Q2 has dramatically expanded from 8kHz to 16kHz, speech frequencies expanded from 280Hz-4kHz to 50Hz-6.1kHz, ultra HD wideband speech has come to your world. 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.