【2024 UPGRADE IP68 WATERPROOF USB CONNECTOR 】IP68 Waterproof / Moisture-proof / Dust-proof. Silicon rings and clamping nuts provide the perfect waterproof and excellent sealing, which is safe for indoor and outdoor USB connection. The casing is made of nylon PA66 with high-temperature resistance( -20° C - 110° C). The sealing element is Silicone Ring with a perfect waterproof level