Tight Beam with Secure Clamp: The SureFire X300T-B high-intensity light outputs 66,000 candela for extended-range visibility. Durable and reliable, it features a Mil-Spec aluminum body and a Thumbscrew clamp for secure attachment to a wide range of compatible rail systems. SureFire 123A Lithium Batteries (4 Pack): Power high-drain devices with confidence using these high-performance 3V lithium batteries. With a 10-year shelf life, leak-resistant design, and reliable output, theyre a dependable energy source for flashlights, cameras, and other essential electronics. Waith Universal Battery Tester: Test AA, AAA, C, D, 9V, and button cell batteries with this compact, easy-to-use testerno power required. Designed for quick reads and everyday use, its ideal for households, offices, or toolkits to avoid battery waste and keep electronics running efficiently. Waith Battery Case: Organize and protect your batteries of various sizes with this durable storage case.