Product color: black- Light color: red, white, green
- Size: 37*25*13mm
- Weight: about 16g
- Instructions: Long press (2s) to switch on and off, and short press to adjust the light mode, which can cycle in red, green, white, fast flash, slow flash, and always-on modes.
- Built-in battery: 3.7V 90mah
- Charging time: 60 min
- The package includes:1 × tail light2 × Velcro2 × rubber rings1×USB cable
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