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 Product Charging: 5V 1A Charging Time: About 90 minutes Setting Mode: Fast Strobe, Slow Strobe Product Size: 4.8 x 3.43 x 1.84 cm Features: 1. 2.4G wireless remote control for convenient operation 2. Built-in rechargeable battery with long-lasting performance, MICRO USB charging port included with matching charging cable 3. Waterproof design suitable for use in rainy conditions 4. High-quality, high-brightness multi-color LEDs including white, red, green, and more, delivering effective illumination 5. Universal strobe light widely applicable for improved 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 30 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)