Spec:
All Sight Rear Safety Light with Light Guide Optical Design,
0.5W Red LED, 2 Mode W/Bracket 2*AAA Batteries Included, Water Resistant
Run Time: 18 hrs (Constant) to 36 hrs (Flashing)
Size: 70 × 32 × 36.5 mm
Weight: 33.5 g (without battery)
