Tailored for aircraft aviation, automotive enthusiasts, and person seeking emergencies signaling solution during commutes or aviation operations Equipped with a user replaceable button battery ( battery not included) and crafted from, this keyring accessory ensures long lasting in critical situations This aviation tool combines light weight durability with intuitive operations, making it essential addition to professional aviation kits and everyday carry essential Emergencies alert Simulator Keychain with realistic alerts, designed for aviation professional and suitable for aviation gear, featurings a small size build for portability Attach to, flight bags, or car interiors to deliver instantly warning alerts during roadside emergencies, flight training, or aviation drill, Manufacturer: Kaeltsyn