It is great for cycling at night or in places where visibility and safety are concern.

Features:
Built in rechargeable lithium battery, only takes 1 hour to fully charge, and the working time is 3-12 hours.
White headlight with 4 switchable lighting modes,and rear light has 6 lighting modes to select.
IPX4 waterproof and charging port with waterproof rubber cover,convenient to use in rainy days.
It weighs only 22g for each light, light weight and portable.
Easy to install on your bike tube with provided rubber bands.
Wide application for seat posts, handlebars, backpacks, helmets,etc.
Suitable for cycling, hiking, camping, or any outdoor activity.

Specification:
Battery: (head light)350mAh ; (rear light)250mAh
Waterproof level: IPX4
Working time: 3-12 hrs
Charging time: approx. 1 hr
Size: 43.5 * 30 * 27 mm / 1.7 * 1.2 * 1.1 in
Weight: approx. 22 g / 0.8 oz (for each)
Package size: 104 * 68 * 35 mm / 4.1 * 2.7 * 1.4 in
Package weight: approx. 56 g / 3.7 oz

Package List:
1* Rear Light
1* Headlight
2* Charging Cable
2* Rubber Band
1* User Manual