Pluggable Extended MIC: These studio wireless headphones can be twisted discretionarily picks-up your voice loud &clear and provide crystal-clear conversations even in noisy environment. These Bluetooth headphones can be used mainly for chatting, music and if needed, as a backup to gaming headset. Let your taste choose your headphones. Up to 30 Hrs Playback Time & Clear Conversations--The first Bluetooth headphones designed for long-term calling in the world, Japanese voice coil and Japanese driver diaphragm delivers professional-quality sound to satisfy the high quality and clear conversations. Professional Quality Sound--Enjoy superb, balanced sound and supreme comfort with the OneOdio wireless bluetooth headphones. Large 50 millimeter speaker unit drivers combined with neodymium magnets provides stereo Hi-Fi level sound, powerful bass, clear vocal, and crisp high tones form perfect balanced sound. Maximum Comfort & Space Saving--Ergonomic designed memory-protein memory earmuffs simulate to human skin texture, ensuring long lasting comfort.The foldable Headband is not only designed for saving your desk space but for carrying in the provided carrying bag. WORKS WITH: iPad, iPod, iPhone, Android and many other audio devices. High-quality sound, supreme durability, and maximum comfort. These are the headphones you've been looking for. Spefications: Bluetooth Version: V5.0 Bluetooth Range: Up to 33 feet/10 meters Bluetooth Protocols: HFP/HSP/A2DP/AVRCP Impedance: 32 Sensitivity: 110+/-3dB Frequency Range: 20-20kHz Driver: 50mm Battery Capacity: 500mAh Charging Time: 3Hours Playing Time: About 30Hours Standby Time: About 500Hours Audio Output: Wired/Wireless