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The Koss BT539ik Wireless Bluetooth® Over-Ear Headphones pack powerful wireless sound into a portable, fold-flat unit.
  • Bluetooth® 4.0 Technology
  • Detachable cord
  • Available in dark grey or white
Brand: Koss
Model: BT539ik
  • The Koss BT539i Wireless Bluetooth® headphones have the natural fitting, iconic “D-profile” earcup, first featured on the ergonomically designed Koss Pro4AAA and now available on many Koss headphones.
  • The D-profile mimics the shape of the ear, creating an excellent seal for the most consistent sound reproduction.
  • Listeners stay connected using the built-in microphone. Easy to locate, on-board controls allow listeners to quickly navigate through songs, play or pause music, change the volume level, and answer incoming calls.
  • The built-in rechargeable lithium-ion battery delivers up to 12 hours of play time or 12 hours of call time (at moderate levels) and 40 hours of standby time on a single charge. If the rechargeable battery runs out, the BT539i comes with a detachable analog cord, which can be used as an audio bypass.
  • Closed ear cushions fit comfortably around the ears to block outside noise and keep music from leaking out.
  • When the music stops, the Koss BT539i headphones fold flat into a convenient size that is easy to carry and even easier to store.
  • The Bluetooth® word mark is a registered trademark owned by Bluetooth SIG, Inc. and any use of such mark by Koss Corporation is under license.
  • Full size, Wireless Bluetooth® Over-Ear Headphones
  • Bluetooth® 4.0 Technology
  • D-Profile
  • Built-in rechargeable lithium-ion battery
  • Up to 12 hours of playtime (at moderate volume) on one charge
  • Up to 40 hours of standby time on one charge
  • Detachable cord
  • Fold flat for travel
  • Available in dark grey or white
  • 10-20,000 Hz
  • 38 Ohms
  • 97 dB SPL
  • 4 foot
  • One Year Warranty

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