Made of aviation grade ABS material, built in 1200 mAh Lithium battery, it can be charged by USB. Waterproof to bear for heavy rainy or snowy days. With bottom lock design, could be hang on anywhere. Super bright, it keeps you safe at night. It can light through even in a distance. Suitable for night walking, camping, hiking, fishing, road trip, etc. Measuring 6.1 x 1.1 inches. Available in black, white colors. Add your company name or logo for maximum visibility. Price for over 2000 pcs are based on sea shipment.