FACT SHEET Quality speaks louder than words The Sennheiser SC 630/SC 660 ATC/C3 AG series of premium-quality headsets for Air Traffic Control, C3 operations and communications operators delivers outstanding sound performance where it counts. The exceptional wideband voice clarity delivered by the series’ ultra-noise cancelling microphone ensures that commands come through loud and clear - even in noisy environments like a busy control tower. Their premium quality build, with steel reinforcement at vulnerable speaker joints, means that these headsets never lose their out-of-the-box fit and a fully adjustable reinforced headband and generous leatherette ear pads are made to maximize comfort. Sennheiser ActiveGard® technology protects users’ hearing against acoustic injury caused by a sudden sound burst on the line, with no risk of communication drop-out. FEATURES & BENEFITS - Sennheiser Voice Clarity for accurate communication, provides a natural listening experience - Perfect speech transmission Ultra noise-cancelling microphone filters out ambient noise for optimum speech clarity to reduce “call-back/ read-back” events - Sound protection from acoustic injury caused by sudden sound bursts on the line with Sennheiser ActiveGard® technology - Two channel application for air and land based communication on SC 660 ATC/C3 AG - Extreme durability with stainless steel hinge on speaker joints - Exceptional wearing comfort with large leatherette ear-pads

FACT SHEET Wearing style SC 630: Headband with side-support. SC 660: Headband. Headphones* Sound pressure level: dB SPL @ 1 KHz, 0.5 V 103 103 103 THD, total harmonic distortion <1 % at 102 dB SPL at 1 kHz Frequency response 50 - 18,000 Hz * Limited by ActiveGard® Microphone Microphone type Electret, ultra-noise cancelling Sensitivity -38 dBV/Pa (12.6 mV/Pa) @ 1 KHz, +/- 3 dB General Data Contact pressure SC 630: Approx. 1.0 N, SC 660: Approx. 1.5 N Connector Unterminated, pre-tinned SC 630 ATC/C3 AG No connection Mic + Spkr + Spkr GND MIC GND : L = mic boom arm side. R = opposite mic boom arm...

FACT SHEET SC 630/660 ATC Headsets Technical DataPackaging Dimension of product 153 x 210 x 60 / 6.02 x 8.27 x 2.36 packaging (W x H x D) Package weight (incl. complete SC 630: 220 g/7.76 oz, SC 660: 253 g/8.92 oz product and packaging) Units in distributor master carton 20 Master carton weight SC 630: 5.63 kg/198.59 oz, SC 660: 6.29 kg/221.87 oz incl. products Dimension of master carton 615 x 415 x 185 mm/24.21 x 16.34 x 7.28 in (W x H x D) Unit pack/end user 1 Content of delivery Box content - Headset - Leatherette ear pads, mounted on headset - Cable/Clothing clip, mounted - Nylon carry pouch...