You can get a pack of 10: 5 black/5 white. This self-defense keychain alarm clock can make a loud sound, even at a distance of 150 meters, the decibel can reach up to 130DB, attracting others' attention, which can effectively scare away dangerous attackers and seek help from people around.     LED design, the LED light of this security alarm key fob can keep you safe and sound in the dark. Perfect for night running, dog walking, traveling, hiking, camping and other outdoor activities.     Portable size, can be hung on key chains, backpacks, ladies bags, etc. Suitable for students, the elderly, children, women, etc.     Easy to use, the alarm is activated when the contact pin is pulled out, and the alarm continues for 30 minutes unless the pin is reinserted into the device.     Using high-strength, environmentally friendly and durable plastic material, it is resistant to falling.          Colour:black+white     Material:plastic          Package Contents:     10 * security personal alarms          Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.