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Williams AV HED 021 Deluxe Mono Folding Headphones

The HED 021 from Williams AV is an adult size, 32 Ω, mono folding headphone unit. These comfortable dual headphones have an adjustable headband, and feature a mild- and low-gain hearing loss rating. The replacement earpads are: HED 023, HED 023-100 (sold separately).

Specifications
  • Style: Mono, folding headphone unit
  • Dimensions: 6-7⁄8" x 5-5⁄8" x 7⁄8"
  • Weight: 0.12 lbs.
  • Plug: 3.5mm mono
  • Cord: 39"
  • Driver Size: 30mm
  • Nominal Impedance: 32 Ω
  • Freq. Response: 20 Hz to 20 kHz
  • Weight: 52 g
  • Max Power Input: 100 mW
  • Sensitivity: 110 dB @ 1 kHz
  • Replacement Pads: HED 023 (one pair, sold separately)