JETFIBER Fusion Splice Machine Model X4+ is Core to Core Alignment technology with 4motors fiber optic alignment mode. It takes 6 seconds to weld (fast mode), 10 seconds to weld (auto mode), and 12 seconds to heat up. It has a high capacity 5600 mAh battery, automatic alignment and fusion process, and an average connection loss of no more than 0.02 dB. It also uses LED display technology, tempered glass touch screen. The Fusion Splice machine has passed dustproof, shockproof, and waterproof tests.