Nux B-7PSM – Digital 5. 8 GHz wireless in-ear monitor system, easy and uncomplicated plug-and-play application, compact body pack can be attached to the belt or strap of the instrument, frequency range: 20 Hz – 19 kHz, sample rate: 24bit/ 40 kHz, battery life: 4 hours, charging time: approx. 1.5 hours, latency: < 5.5 ms, dynamic range: 92 dB, up to 30 m range in clear view, includes rechargeable storage box, dimensions transmitter/receiver (L x W x H): 6 cm x 3.6 cm x 2.5 cm, weight transmitter/receiver: 32 g each, weight storage box: 130 g