CR2450 Lithium 3V Batteries (CR2450) by Install Bay®.
Install Bay® is a brand of Metra, a company with tentacles into every part of the car stereo/security business. Their primary clientele is professional car audio/security installers, so they're at the forefront of the business. Metra also operates the Install Institute for installers, which guarantees their finger is on the pulse of the industry. Installer Bay products will make your install as seamless and reliable as possible.