SUNUV 2-in-1 LED/UV lamps (such as the SUN4 or SUN2C) are professional-grade 48W nail dryers designed for curing all types of UV/LED gel polishes, builder gels, and gem glue. They feature dual-wavelength technology (365nm + 405nm), 50,000-hour bulb life, smart motion sensors, and multiple timer settings (10s/30s/60s/99s low-heat mode) for rapid, salon-quality results at home. Key Features & Benefits 2-in-1 Technology: Combines LED and UV rays to cure both LED-specific and traditional UV gels twice as fast. Smart Sensors & Timer: Automatic activation (hand in, lamp on) with a 4-timer setting (10s, 30s, 60s, and 99s low-heat mode) on a digital display. Comfortable Curing: Features a 99-second low-heat mode to minimize heat spikes, safe for skin and eyes. Design & Usability: Wide, comfortable opening suitable for both hands and feet, often with a detachable base for easy cleaning. Capacity: 30–39 durable LED beads provide a 180-degree curing range with no dead zones. Common Models & Specs SUNUV SUN4/SUN4S: Known as "Smart 2.0" with a 2-in-1, 48W, 10s/30s/60s/99s timer settings. SUNUV SUN2C: Focuses on comfort with a, 48W, 10s/30s/60s/99s timer settings and removable base. SUNUV SUN5 Plus: Features 36 LED beads and a 120-second max timer option. Usage Tips Optimal Curing: Thin layers are recommended for best results. Sticky Layer: A slight sticky layer is normal after curing, designed to help subsequent coats adhere; this can be removed with rubbing alcohol.