Yuer TR-U2 - Wireless System, digital wireless system for guitars, basses and other instruments, 6 switchable channels allow parallel use of 6 systems, built-in rechargeable 3.7V / 650 mAh lithium battery, range up to 30 m / 98 ft. (without obstacles), 5 ms latency, frequency range 10 - 22,000 Hz, 5.8 GHz ISM band for worldwide use, 24 bit / 48 kHz A/D converter, 105 dB dynamic range, 270° rotating TS jack plug, runs over 8 hours per battery charge, On/Off switch, channel select switch, status LEDs show selected channel and indicate battery life, quick charge via included USB Y-cable (3.5 hrs for a full charge), durable ABS composite housing, Micro USB socket, dimensions (W x D x H): 121.5 x 36.5 x 29.5 mm / 4.78" x 1.43" x 1.16", single weight 40 g / 0.09 lbs, incl. USB charging cable, Note: The system is not compatible with active electronics or pickups.