Relay Baton Bluetooth Audio Outdoor Household Power Bank

Product information:
Power type: USB
Color: TK-66 Gray, TK-66 red, TK-66 Green, TK-66 yellow
Frequency range: 100HZ-20KHZ
Rated Voltage: 3.7
Additional features: card insertion, waterproof
Applicable scenarios: car, fitness, outdoor, mobile/portable, broadcasting system
Rated Power: 5