Built-in Battery: 3.7V 350mAh Charging Interface: Micro USB Light Color: White, Red, Green, Blue, Yellow, Purple, Sky Blue Product Weight: 17.8g Usage Time: About 3.5 hours when flashing Charging Input: 5V 1A Charging Time: About 90 minutes Setting Mode: Fast Strobe, Slow Strobe Product Size: 4.8 x 3.43 x 1.84cm Features: 1. 2.4G wireless remote control for convenient operation 2. Built-in rechargeable battery with long-lasting performance, equipped with Micro USB charging port and included charging cable 3. Waterproof design suitable for use in rainy conditions 4. High-quality, high-brightness multi-color LEDs including white, red, green, and other colors, delivering effective illumination 5. Universal strobe light design for wide application, enhancing night visibility and signal indication 6. Seven lighting colors with multiple modes: seven-color fast flash, seven-color slow flash, seven-color SOS, seven-color constant on, aviation mode, cycle mode, and other selectable modes with memory function Package Included: 1 set (1 lamp, 1 set of accessories) / 1 set (2 lamps, 1 set of accessories) / 1 set (4 lamps, 1 set of accessories) / 1 set (1 lamp, 1 charging cable)