MEROCA Bicycle Smart TailLight Waterproof USB Rechargeable 7 Colors Tail Light Riding Warning Safety Bike Rear Light

Optical Lenses，High brightness lamp beads80 lumens, 180 ° flood, high brightness, optical lens, more translucent.Smart Start/StopUnder strong light, stand still for 30 seconds and turn off automatically, under dim light stand still for 180 seconds and turn off automatically / after sensing vibration, turn on the tail light automatically.Indicator light descriptionRed light blinking indicates charging statusThe red light is always on to indicate that the power is fullBlue/green/red is auto modeGreen/blue/red always on is manual modeAuto/Manual mode"Click" switch is automatic mode"Press and hold for 3 seconds" switch is manual modeBattery power descriptionGreen light: 100%-70% powerBlue light: 70%-40% powerRed light: 40%-10% power