1 pc Bicycle taillight. Size: Headlight: 4 3.4cm/1.57 1.34in, Saddle bracket: 5.6 1.8cm/2.20 0.71in, Strap bracket: 11 2.3cm/4.33 0.91in. Vibration sensing, automatic wake-up: the light will automatically turn off if there is no vibration for 30 seconds, and the light will automatically turn on when it senses vibration (except for the constant light mode).
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