Bluedio’s Hurricane Turbine (Shooting Brake) Bluetooth 4.1 luxurious Bluetooth 4.1 Headphone delights the world. Luxurious music enjoyment is always unreachable. For this reason, Bluedio keep hard working on 3 years of R&D and testing, manage to customize a wireless headphone with unrivaled timbre, adapted to a variety of rugged circumstances and highly cost-effective. Thoughtful design, unexpected superior sound, make luxury become reasonable, this is Hurricane Turbine (Shooting Brake) Bluetooth 4.1 headphone. Technical specification: Drivers: 57mm speaker X 2 Transducer type: dynamic Bluetooth version: V4.1 Frequency range: 2.4GHz-2.48GHz Operating distance: up to 10m (free space) Bluetooth profiles: A2DP、AVRCP、HSP、HFP Impedance: 16Ω Frequency response: 20Hz-20kHz Sensitivity: 110dB Distortion:<0.1%(THD) Talk time: up to 45 hours Standby time: up to 1625 hours Charging time: about 2 hours Operational temperature: -10 to 50 Degree Powerful bass resonance of Bluedio: 57mm ultra-large dynamic drivers, turbine style housing, with iconic Bluedio surging low-frequency shock, let you feel the bass resonate deep in the chest. Clear and transparent bass, mids and highs. Connectivity Technology: Wireless Ultra-long operation and carefree calling from Bluetooth 4.1: Acoustic echo cancellation and noise reduction effectively reduce ambient noise while talking, make far-end listener cannot hear what you said become history, just like talking face to face. Customized function: Audio Sharing allows you to connect to another H(Shooting Brake) headphone via audio cable, share music feast with your friends instantly(recommended to use headphones with impedance of 32Ω or higher). Comfortable wearing: Custom fit supra-aural soft earmuffs, artificial protein leather of earmuffs simulated to human skin texture, ensure long lasting comfort in various rugged circumstances Convenience: Just a plug with audio cable(buy separately), then listen to your favorite tracks without using any battery, no matter how long is your playlist. H-turbine also incorporate 4 languages voice prompt(Chinese, English, French, Spanish) New other: A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed.