CZYCO Head-Mounted Wireless Bluetooth Headset Subwoofer HIFI Stereo For Mobile Phone Wireless Pluggable Card Radio ?Red?

Features: Space-saving design Unique foldable design not only saves space but also makes it portable. Soft protein padding flexible closed-back fix. Easy to storage and carry. Comfortable earmuffs Auricle with a soft sponge and leayher material inside,the 40mm subwoofer brings silence is a sterea experience. Never power off.Built-in speakerphone for hands-free calling, 400mAh Lithium-Ion rechargeable battery offers 10 hours talk time or music playback Bluetooth 4.1, Signal stability, speed, power saving . HD MIC, HD Sound, much more clear music and talking. Collapsible for easy storage, flexible and durable headband, protein leather ear cups allow prolonged use Microphone Noise Reduction echo cancellation. Headphone Model: ST-17 Bluetooth Version: V4.1 Connection Distance: 10m Resistance: 32 + 15% Sensitivity: 105 + 3dB Battery Capacity: 200mAh Driver Unit: 40mm Headphone Response Efficiency: 20Hz - 20kHz Package included: 1x Headset 1xUSB Charging cable