COMPATIBILITY = Works with: T2, T2X, T5 Replacement for: SR-20 / SR-21 Headsets Replacement for P/N : HD-700-1 FEATURES = Comfortable - weighs just 6 ouncesAdjustable, flexible Boom mic, bio-directional, noise canceling and waterproofScrew connector to attached to the device. Stays attached securelyHRS connector from the headset to the device (Easy to replace without sending device for full repairs)Padded, waterproof ear cup adjusts vertically and horizontally to fit snugly and comfortablyReversible, users can wear it on either side of the head ear Weight: 6 oz Side: Reversible Cord: HRS connector Ear Cup: Padded, waterproof, adjustable vertically and horizontally Boom Mic: Noise-canceling, waterproof, flexible, bio-directional Built For Extremes: Designed specifically for industrial and distribution center environments where background noise, temperature and humidity range to extreme levels. Reversible: Whether the user is left or right handed, this is the perfect headset. Users can wear it on either side of the head by rotating the mic. HRS Connector: from the headset to the device. This is so, if any part of the cable becomes broken or damaged - it can be replaced easily. Just order replacement cable - no need to send in for lengthy repair, or replacement! Waterproof: Both the mic and ear cup are fully water and humidity proof, perfect for hot or cold industrial or warehouse work!