Sensitivity: 110±3dB. Impedance: 32ohm. Frequency Response:20Hz – 20KHz. Net Weight:400g
Features: Rockville BTH5 Wireless or Wired Bluetooth Headphones, Foldable+Detachable Cable Bluetooth Headphones With Incredible Bass and Clear Highs Headphones work wireless or wired! If the battery is not charged you can still use the headphones wired! Bluetooth Version 4.1 connects quickly with a 33 foot range 25-hours music playback at medium volume and up to 40 hours at lower volume Charge time: 2 hours 40mm drivers x 2 Large over-the-ear cups with the thickest and most comfortable cushion in the industry Built-in microphone for hands free calling Ear cup buttons offer easy controls for music and calls Positive Sound Cancellation Incredible deep bass response with extended frequency range Crystal clear highs Minimal sound bleed Soft and comfortable headband Ear cups fold for compact storage Detachable 44†coiled cable Cable is made of 100% Oxygen Free Copper Gold-plated connector USB charging cable included Specifications: Bluetooth Range: 33ft Style: Closed-Back Design: Circumaural Transducer Type: Dynamic Driver: 40MM Sensitivity: 110±3dB Impedance: 32ohm Frequency Response:20Hz - 20KHz Net Weight:400g