TrackmateGPS' HYDRO, the best waterproof, real time hardwired tracker for your boat-motorcycle-jetski-drone-ATV-generator or any outdoor equipment. TOP RATED ON AMAZON FOR 3 CONSECUTIVE YEARS. Backed by TrackmateGPS's R&D, Highest Quality Control Standards. Top Rated Support Team. Highly competitive plans start as low as $9/month. Indicator LED light displays status. Hard wired/internal back up battery. 2 wire harness for easy installation. Tiny,1.5"x 2", mighty in features and performance. Lifetime warranty with active service plan. No contract/activation/cancellation fees. No small print. No hidden fees ever. THIS IS A 2G DEVICE. MAKE SURE THAT T-MOBILE PROVIDES 2G SERVICE IN YOUR AREA BEFORE PURCHASING FOR US.