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 1.84cm 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 emitting white, red, green, blue, yellow, purple, and sky blue light with clear visibility 5. Universal strobe light widely applicable for night warning and signal indication 6. Seven lighting colors with multiple modes including fast flash, slow flash, SOS, constant on, aviation mode, cycle mode, and 30 total 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)