Both the wiring head and tail have waterproof rubber rings, which greatly improve the waterproof effect. Whats more, these high-quality waterproof garden spike lights are not only able to work under -20 environment, but also available under 55 environment. OPTIONAL EXTENSION CABLES: Compared with traditional LED garden spotlights with ground spike, the upgraded pathway spotlights mains powered is set up with 26ft cables. In addition, if you think the cables are still too short to meet your installation need, please know the ASIN B07WZX3GM6. RELIABLE & LONG LIFESPAN: landscape spotlights have passed FCC, CE, PSE certifications.Made of premium die-casting aluminum material, these garden spike lights are durable and solid with a long lifespan, up to 50000 hours.