refun Bicycle Light - Front and Back Silicone LED Bike Light Set - 2 High Intensity Multi-Purpose Water Resistant Headlight - 2 Taillight for Cycling Safety (2pcs Red & 2pcs Black)

Features: 1. 4 Kinds of switch: full light, flash, slow flash, off, according to your actual needs can switch quickly 2. Water resistant shower proof design - is not afraid of rain flooding 3. Install or remove without any tools you can get 3 seconds 4. One-Touch switch design, easy operation 5. All the sustainable use of light 45 to 70 hours 6. Scintillation sustainable use of 160 hours 7. Using two CR2032 button batteries for each light Specifications: 1. Materials: Flexible water resistant silicone 2. Light Color: Red 3.Weight:21g 4.Powerd by: 2 x CR2032 batteries for each light Package Included: 4 x Silicone Bike LED Light 16 x CR2032 batteries (8pcs inside lights,8pcs for standby) How do you open the light to replace the batteries Stretch off the rubber from the inside and you will see the cap that twists off to replace the battery. The silicon is covering the battery. Take out the silicon covering to expose the battery. It is not hard and it can be replaced easily. if you need headlight that are compatible with the taillight, please refer to the link below: 1)http://www.amazon.com/gp/product/B01LX9K110 2)http://www.amazon.com/gp/product/B01LXMRNTQ