Mobile phone pendant: Make a small and cute mobile phone pendant, such as a small animal. There is a miniature camera and a small screen on the pendant. After connecting to the Bluetooth of the mobile phone, the child takes a picture of the trees, and the data is transmitted to the mobile phone APP for analysis and processing, and the results can be viewed on the mobile phone, and the brief information can also be displayed on the small screen of the pendant, and it can be used on the mobile phone at any time when going out. --v 6.1
