E VO!CE. All with the freedom and mobility of advanced LIGHTSPEED wireless. SPECS & DETAILSDIMENSIONSPHYSICAL SPECIFICATIONS Length: 5.43 in (138 mm)Width: 3.70 in (94 mm)Height: 7.68 in (195 mm)Weight: 13.05 oz (370 g)Charging cable length: 1.8 m (5.9 ft)TECHNICAL SPECIFICATIONS HEADPHONE Driver: Hybrid mesh PRO-G 1.97 in (50 mm)Magnet: Neodymium Frequency Response: 20Hz-20KHzImpedance: 32 Ohms Sensitivity: 91.7 dB SPL @ 1 mW & 1 cm MATERIALS Fork: Aluminum Headband: Steel Ear and head pads: Memory Foam Leatherette Extra Ear pads: Memory Foam Cloth PRO MICROPHONE Microphone Pickup Pattern: Cardioid (Unidirectional)Type: Electret Condenser Size: 0.24 in (6 mm)Frequency Response: 100Hz-10KHzWIRELESSBattery Life (rechargeable): up to 20h 1Battery life may vary based on user and computing condition. Up to 20h battery life is based on headset volume set to 50%.Wireless range: up to 49.22 ft (15 m) Connection Type: 2.4GHz LIGHTSPEED