AKG DMS300 Vocal Set P5, Digital Wireless System Set for Vocals and Speech, Set consists of a receiver and transmitter with a dynamic capsule, No license is required and no charges are incurred when used anywhere in the world (2.4 GHz), Up to 12 hours of operation for the pocket transmitter with 2 x AA batteries, High-quality sound via the uncompressed 24-bit/48 kHz wireless transmission, Automatic frequency adjustment facilitates the search for free channels, AES 256-bit encryption provides effective privacy for confidential environments, Easy to operate, unpack and get started (Plug and Play), Simultaneous operation of up to 8 wireless systems, Range: Max. 30 m, Dimensions of the SR300: 200 x 165 x 44 mm, Weight of the SR300: 0.358 kg, Dimensions of the HT300: 51 x 250 mm, Weight of the HT300: 0.297 kg