Product: Bluedio U (UFO) PPS 8 Drivers High-End Bluetooth headphones Revolution/3D Sound Effect/Aluminum alloy build/Hi-Fi Rank wireless&wired Over-Ear headsets with carrying hard case Gift (Black and Red)
Brand: Bluedio
Color: Black, Red
Bluedio U (UFO)Premium Wireless Headphone is first and foremost committed to one thing: the superb sound, achieved by Bluedio exclusive PPS8 acoustics technology and the built-in DSP processor. And its incredible 25 hours battery life is ensured by the latest Bluetooth 4.1 low-power technology. Furthermore, UFO is beautifully crafted with top notch aviation material: Al-Ti alloy, sturdy enough to be durable for long periods of time. Altogether, Bluedio U (UFO) redefines what reference-level wireless audio is all about. 
 
 Troubleshooting steps 
Does not work well with PC: Enter the computer settings and enable the mic. Disable all the other devices and set the headphones as Default Device. If the PC has a built-in Bluetooth, please try to install the Toshiba Bluetooth stack (choose the newest one or whatever is recommended online).If you use a Bluetooth dongle, you may need to buy a CSR 4.0 Bluetooth adapter, the CSR 4.0 Bluetooth adapter would work perfectly with our headphones.
 No sound or one side has no sound: Please try to reset the headphone: Power on the headphones.Charge the headphones for 10 seconds or so, the headphones would power off on their own(you can see the LED goes out), unplug the cable.Power on the headphones again.And remove the pairing memory of your device,then pair again. 

Specifications
Bluetooth version: Bluetooth 4.1 
Supported profiles: A2DP, AVRCP, HSP, HFP 
Drivers: 50mm x 2 ; 20mm x 6 
Impedance: 32Ω 
SPL: 120 dB 
Frequency response: 5Hz -25000Hz 
Wireless range: 30ft (no obstructions) 
Music time: about 25hours 
Charging time: 3 hours for full charge
NOTE: Bluedio U (UFO) PPS 8 sold by "Bluedio".【Bluedio U Professional Wireless Audio Headphones】Experience deep and powerful, yet well balanced music with the Bluedio Exclusive and Innovative 8 Driver Technology. Each frequency is accurately reproduced for a captivating listening experience.
【3D Surround Effect】 Dramatically enhancing your music doesn’t have to be complicated. Simply turn on the 3D surround effect, you'll experience something entirely new—a virtual 360° surround sound from the built-in 3D DSP processor, as if in a concert hall.
【24-bit Hi-Fi Stereo Bluetooth Headsets】Optimized for high-fidelity sound, the high-resolution Bluetooth decoder achieves a remarkable new level of speed: up to 24-bit signal processing. It helps reproduce abundant details, let you hear new details and nuances even in your most-played favorites.
【Top Aviation Material】Al-Ti Alloy UFO is beautifully crafted with the top-notch aviation material: Al-Ti alloy, which features high strength performance with extreme lightweight (just 337g).Unbreakable, durable and drop resistant. Absolutely secure.
【Latest Bluetooth 4.1 Chip】The Bluetooth 4.1 is the latest version released from SIG, vastly improved in energy savings. The rechargeable lithium-ion battery charges in just 3 hours with the included USB cable, and delivers up to 25 hours playing time per charge.

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