ADAPT 165 508319 ADAPT 165 is a double-sided headset with a 3.5 mm jack optimized for UC professionals, who value device flexibility, great sound, discreet modern style and comfort. Specifications: Colour Black with white Wearing style Headband Frequency response (microphone) 100 – 10,000 Hz Frequency response (headphones) 20 – 20,000 Hz Microphone Noise-cancelling microphone for optimal speech transmission Max. sound pressure level 103 dB limited by ActiveGard® Weight foam ear pads 95 g / 3.34 oz - leatherette ear pads 97 g / 3.44 oz Speaker type Dynamic, neodymium magnet Sound enhancement profiles Automatically adapt and optimize sound for both communication and multimedia/music Included in the box: Headset with 3.5 mm jack Acoustic foam ear pads mounted on headset Safety guide Quick guide