The Scubapro Battery Kit is designed for the Aladin Tec, Aladin Prime, and Aladin Matrix dive computers. This kit includes a high-quality lithium battery (Sony CR 2450 3V), an original O-ring, and silicone grease for the O-ring, ensuring a secure and waterproof seal. Replacing the battery is a straightforward process; however, it's recommended to follow the procedure outlined in the user manual to maintain the integrity of the device. Please note that changing the battery yourself may void the manufacturer's warranty if water ingress occurs. For optimal performance and to preserve the warranty, it's advisable to have the battery replaced by a professional technician.