1. IP68 waterproof grade, can be exposed to the sun and rain 2. Waterproof, dustproof and shockproof, sturdy and beautiful body 3. The transmitter self-generating design, no battery is required, energy saving and environmental protection 4. The transmitter can be pressed around, easy to use 5. 4-level volume adjustable, 58 songs can be replaced 6. Volume range: 0-150dB 7. Power supply mode: transmitter self-generating design, receiver in-line 8. Frequency: 433.92MHz 9. Transmission distance: about 180m without interference 10. Dimensions: transmitter about 6.2 x 2cm, receiver about 9 x 2.3cm
