TOA WM-5225:

Frequency Range: 576 – 937.5 MHz*, UHF
Channel Selectable: 64 channels (the number of channels may differ from country to country)
RF Carrier Power: Less than 50 mW (Factory preset 10 mW ERP)
Tone Frequency: 32.768 kHz
Oscillator: PLL synthesized
Maximum Input Level: 126 dB SPL
Maximum Deviation: ±40 kHz
Audio Frequency Response: 100 Hz – 15 kHz
Dynamic Range: 95 dB or more (with WT-5800)
Origin: Japan