... , ruler, protractor, set square, searchlight and other tools, and to page up/down, drag object, clone object, etc. Also, the customizing ... damage; 3. The toughened glass (Unique anticorrosion, anti-dazzle and corona protection design) is built in to protect the screen; 4 ... Bluetooth WIFI, and earphone can be built in;The operating page can be stretched;Abundant teaching resources -- the software of IP ...