New and High Quality Two-way anti lost Multitasking management Location and tracking data Ultra-low power consumption Convenient and portable Specification: Bluetooth version: Bluetooth 4.0 Bluetooth distance: 10 meters Material: ABS Size: 47*31*10mm Net weight: 9g Function: anti-lost, self-timer, recording, positioning loss location Available colors:white,pink,blue,black(optional) Specifications: 100% New and High Quality Two-way anti lost Multitasking management Location and tracking data Ultra-low power consumption Convenient and portable Package Included: 1x Anti-lost device Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings