【Patented award winning design】: Original design, Installed at the gap of battery bover, Gives your Airtag classic look keep it real. | 【Easy to intall】: If you can open the lid of the coke and screw it on again, you can install it. | 【Safe and reliable】: After installation, it can bear at least 200N vertical tension,100% will not open automatically. | 【Not affect the signal & waterproof】:The width of the frame is about 2mm, which does not affect the signal, and it cannot touch the waterproof rubber ring at all. | 【Health and environmental protection】: Stainless steel materials are certified by Swiss SGS which is conducive to human health and environmental protection. (Note: Airtag is not included. Note:The ring is intalled successfully if the Airtag can be spinned freely.)