Mfi Certified Smart Pet Locator Protective Cover Silicone Collar 1. Material: silicone 2. Adjustment range: 28-39 cm 3. Battery: CR2032 button battery 4. Sound: 90dB 5. Sound search: about 20 meters 6. Positioning search: global positioning 7. Bind multiple devices at the same time and find pets with one click 8. Open the search APP and click to play the sound. The device will ring to help find the pet. The indoor range is 10-20 meters and the outdoor range is 20-30 meters. 9. Global remote positioning with no limit on distance. As long as there is an For Apple device around the pet, the pet’s location can be tracked using the Find My network. 10. Notification of missing pets when they are not with you. When your pet and your phone are out of Bluetooth range for a period of time, your phone will receive a pop-up message reminder. 11. No need to charge, save worry and effort, one battery can be used for 6-12 months, using CR2032 button battery 12. Lightly waterproof design, no fear of wind and rain 13. The anti-suffocation safety buckle is easy to put on and take off, light and does not strangle the neck. When the collar is subjected to an external force exceeding 5KG, it will automatically release to prevent pets from suffocating or being injured in extreme situations. 14. Environmentally friendly material, healthy and safe, flexible and breathable 15. High-strength tensile nylon material, soft and comfortable, diving fabric is strong and does not deform, thickened to adjust the Japanese buckle 16. Main body size: 1.5x28x39 cm