1. Size: 30x30x10mm
2. Mateial: ABS
3. Batteries: 2 x AG3 button cell batteries (included)
4. With plastic insulator between batteries, pull out this before use;
5. Key-finder function: It will flash with red LED and beep intermediately when you whistle and then finds your keys back;
6. Color: Whtie/black or customed;
7. Attachment: 25mm metal keyring;
8. Logo: Customed logo printing on one location(silk printing);
9. Complied with CE and RoHS;
10. Packing: Polybag+ white box packing or blister card packing;