Material: Plastic Size: 4.5*4cm / 1.76"*1.56" Color: As shown in the picture Features: 1. Highly simulated aircraft simulator sound effects, one-button trigger emergency alarm sound, realistic restoration of aviation emergency scenes, tailored for flight enthusiasts. 2. Mini portable design, light and easy to carry, not only a practical keychain, but also a unique aviation theme decoration, suitable for daily use and collection. 3. Made of high-quality ABS material, wear-resistant and lasting, smooth without burrs, exquisite details, highlighting high-end quality. 4. Perfect gift choice, especially for pilots, aviation fans or military enthusiasts, as a birthday gift, holiday surprise or business gift. Package includes: 1pc or 2pc keychain