Home >  Sentry Stereo Headset with Built-in Sub-Woofer 3.5-mm Product is Out of Stock and/or Discontinued. Product No: 20850 Comments There are currently 0 comments to display. Your Name: Email Address (will not appear on web site): Image verification: Message: New Retail Product 30 Days Warranty Sentry, Home Office Products, Mobile-Cordless-Office Headsets UPC: 080068402916 UnitWt: 1.2 lbs. Headphones w/ Sub-Woofer - Sentry Stereo headphones with subwoofer - 2.1 Surround sound - Subwoofer - 2 Drivers: 30mm (tweeter) - 2 36mm woofer - Magnet type: neodymium - Input power: nominal input 20mw (tweeter) - Max input 30mw (tweeter) - Nominal input 40mw (woofer) - Max input 50mw (woofer) - Power output: 0.5w -Impedance: 32 ohms (tweeter) - 64 ohms (woofer) - Sensitivity: 105db (tweeter) 108db (woofer) - Cable length: 2m - Plug: 3.5mm - 6.3mm Adapter - 2 AAA batteries required, not included - Black SENTRYHO2.1 Previous: Suttle Wire Management Frame Next: Sound Box AM/FM clock Radio W/ MP3 Hook-Up