Collapsible closed over-ear headphones with wireless Bluetooth AptX technology from LZR 500 series that were designed in collaboration with H. Thiele, designer from the DWX-Thiele, and deliver high quality sound. They are equipped with the 40mm “Laser Tech” drivers, specifically developed by using an ultra-precise laser technology for transparent sound palette and space dramatization. Perfect ergonomics and unrivalled comfort are ensured with use of memory foam and leather in the ear cups and the headband, and special Ait-Tec ventilation system that leads away any potential sweat. One of the ear cups also provides built-in microphone and remote control with functions including Volume, Play, Pause, Next/Last Track, Phone. The headphones are built with high-quality materials such as plastic for optimal consistency and resistance against breakage. They also feature patented headband and suspending system. They are powered by USB rechargeable lithium-ion battery with lifespan of up to 19 hours (charging lasts only 2 hours). If the battery is exhausted, the headphones can be still used as any other standard headphones with cable. The headphones come with a carrying pouch, an audio cable with flat construction and remote control, and USB cable for charging. Made in Germany. Frequency range: 15 Hz – 23 kHz. Maximum SPL: 118 dB. Distortion: <0.18% THD. Impedance: 32 Ohm in passive mode. Dimensions: 200 x 184 x 89 mm. Weight: 239 g. Black vs. Silver colour design.