Used 2-3 times. The three items marked with red circles in the 11th photo are missing. Operation confirmed OK. All controls are functioning properly. This listing includes the transmitter, receiver, cables, instruction manual, and dedicated case. *Please note that we will not accept returns or exchanges for reasons other than obvious issues such as no response or no sound. The world's smallest class wireless system. Allows for free staging with a usable range of 15m (line of sight). Lightweight wireless microphone that you'll barely feel the weight of. Supports a sampling rate of 48kHz. The built-in microphone, preamplifier, and 24-bit ADC shorten the digitization process and reduce distortion. New receiver equipped with preamplifier, EQ, and effects. [20221211topboxB1_kw] Lightweight new wireless microphone that you'll barely feel the weight of. Features - World's smallest class wireless system - Allows for free staging with a usable range of 15m (line of sight) - Lightweight wireless microphone that you'll barely feel the weight of - Supports a sampling rate of 48kHz - The built-in microphone, preamplifier, and 24-bit ADC shorten the digitization process and reduce distortion - New receiver equipped with preamplifier, EQ, and effects Detailed Information Operating Range: 15m (line of sight) Frequency Response: 20-20kHz, +1dB/-3dB T.H.D. (Overall): < 0.005% (1kHz@-10dB FS) Transmitter Dimensions: 60mm x 25mm x 10mm Weight: 26g Battery Life: 5-7 hours (maintains 80% of maximum capacity after 300 charges) Receiver Dimensions: 115mm x 75mm x 50mm Weight: 310g Power Supply: 9V DC 1A or higher, center negative (KACA-1 included) Output: 1/4" Balanced TRS, 1/4" Unbalanced Controls: BASS/WIRELESS (GAIN)/TREBLE/MASTER/BLEND Effects 1. Room reverb 2. Hall reverb 3. Arena reverb 4. Delay+Reverb