Key Product Features 40 mm custom drivers with CCAW voice coils deliver a broad frequency range from 20Hz to 20kHz Closed-back, circumaural design for excellent isolation 250g light weight, smooth synthetic leather and low-resistance cushions ensure stress-free wearability Three-dimensional arm pivot construction and adjustable slider length alleviate fatigue when working for extended periods Moveable earcups allow single-ear monitoring Thick, durable ABS housing and folding arm ideal for use in tough working environments or travel Straight 3 m cable suitable for use in a wide variety of applications *6.3 mm diameter standard stereo plug adaptor included Convenient carrying bag included Product Specifications Type Closed-back Circumaural (Over Ear) Frequency Response 20Hz - 20kHz Sensitivity (SPL) 100dB/mW Maximum Input Power 1600 mW (at 1kHz) Impedance 51 O (at 1kHz) Driver Unit 40 mm Dynamic CCAW Voice Coil Cable 3.0m (9.8ft) straight cable Connector 3.5mm (1/8”) stereo with 6.3mm (1/4”) stereo adaptor Dimensions (W x H x D) 165 x 203 x 88 mm Weight 245g (0.5lbs) (Without cable&plug) Accessories 3.0m Straight cable   Threaded 6.3mm (1/4) gold-plated adaptor   Nylon carrying bag