LED flashing keychain 1. 2 X 5050 SMD super bright LED 2. Motion Sensor light 3. >150,000 flashes 4. 2 CR-1220 battery LED PULSE motion sensor Keychain, Keyfinders2 * SMD 5050 LED (6 dices) Motion Sensor and patented fading function > 150,000 times Flashing Battery: 2 * CR-1220 lithium baterySafety use LED flashing keychain, keyfinder light