The Dad Lotta-Lite is THE gift for men who are hard to buy for. Phrases that describe Dad's best qualities on a navy blue face are an awesome way to show him how you see him. Perfect for keychains, backpacks, briefcases and more. This little light is the perfect fashionable accessory that has function. * 60 second automatic shutoff timer * 2 bright LEDs at 8 lumens * 1320 minutes of battery life * Removable tray for easy CR2025 lithium battery replacement * 2 additional CR2025 lithium batteries included in the package * 3 ways to affix your light: a removable metal pinch clip, 3M adhesive tape, and a removable metal keyring clip * 1.6” Diameter x 0.5” Think x 1.8” Keychain length You won’t believe how many ways you can use this light! =