After wearing the Naztech i9 BT Active Noise Cancelling Headphones for the first time, you'll never want to take them off! Crystal clear quality delivers opulent sound through these first-rate headphones that feature a completely wireless design with profound Bluetooth connectivity capabilities and a conveniently built-in rechargeable battery. Appreciate acoustic accuracy with the full-spectrum circuitry or simply sit in peaceful silence with spectacular active noise cancelling properties. Auditory Excellence! Features:• High-definition Sound • Premium Memory Foam & Genuine Leather Ear Cups • Superior Battery Life • Braided Fabric Shielded Cable • Foldable for Portability, Includes Travel Case for Storage • Continuous Audio Even after Battery Depletes • Detachable Cable for Cordless Noise Cancellation • Gold Plated 1/4" Stereo Plug Adapter • Gold plated Airline Dual-plug Adapter • Trilingual Packaging (English/Spanish/French) Specifications• Bluetooth Version: 4.1 • Bluetooth Chipset: CSR8645 w/apt-X • Noise Cancellation Rate: 85% • Speakers: 40mm Neodymium • Audio Impedance: 32 Ohms • Charging Time: About 3.0 hours • Charging: Micro USB • Cable Length: Detachable 4.8 feet • BT Operating Range: < 10 m • Connection: 3.5mm jack • Battery Time (Bluetooth Only): 15 hours • Battery Time (Noise Cancelling Only): 30 hours • Battery Time (Bluetooth Noise Cancelling): 12 hours • Battery Type: Rechargeable Li-Polymer Compatibility: Apple iPhone 6s ,iPhone 6s ,iPhone 6s Plus ,iPhone 6s Plus ,iPhone SE ,iPhone SE ,iPhone 7 ,iPhone 7 ,iPhone 7 Plus ,iPhone 7 Plus ,iPhone 8 ,iPhone 8 ,iPhone 8 Plus ,iPhone 8 Plus ,iPhone X ,iPhone X ,iPhone XR ,iPhone XS ,iPhone XS Max ,iPhone SE (2020) , Samsung Galaxy S8 ,Galaxy S8 ,Galaxy S8 ,Galaxy S8 ,Galaxy Note8 ,Galaxy Note8 ,Galaxy S9 ,Galaxy S9 ,Galaxy Note9 ,Galaxy S10e ,Galaxy S10 ,Galaxy Fold ,Galaxy Note10 ,Galaxy Note10 ,Galaxy S20 ,Galaxy S20 Plus , Galaxy S20 Ultra