Sound and Light Synchronization : A bright red light flashes in sync with warning sounds , with more realistic effects at night . Doubles as a keychain accessory or a desktop decoration , blending functionality with display value Real EGPWS Sound Effects : Precisely replicates four key cockpit warning sounds : "Wind shear!" "Terrain! Terrain!" "Sink rate!" and "Pull up!" , press once to enjoy an immersive aviation experience , as if you're in the cockpit Perfect Present for Aviation Lovers : Ideal for pilots , flight school students , and collectors . Serves as both a stress relief toy and a memorable keepsake , showcasing unique taste and passion for aviation Long Lasting Battery Design : Powered by button cell (not included) , the alarm keychain boasts a 6 month standby time . No tools needed for battery replacement , just remember to install the battery before use Real Aircraft Button Replica : Mimics Boeing/Airbus cockpit buttons with a metallic texture and crisp pressing feedback . From curvature to texture , every detail reflects original factory craftsmanship . Compact yet full of character , it sparks conversations and brings smiles to every aviation enthusiast