[Support One-Click Erasing and Lock Screen]Press the lock button, the written content above will not be lost due to deleted by mistake.Or just need press the erase button at the bottom of the electronic basketball coaching board,all the chaos will disappear without a trace,environment-friendly,Saving more time and to show and discuss strategic direction. [Paperless Design]The doodle board for basketball is made of plastic, add round corner design which has good shock resistance and resistance, Reusable coaching board which can be erased up to 120,000+ times.The LCD board can save lots of paper and pencils. And you don't worry about the marker suddenly running out of ink. It 't hurt your hands and stain clothes without ink,environment-friendly [Widely use and Portable]easy to carry in schoolbags, briefcases, handbags etc,easy to take the basketball coaching board anywhere when you need.The board is widely used in school teaching,basketball team,basketball club to formulate game day strategies, daily training plans, tactical seminars, training guidance, technical exchanges, etc. size: 16 inch Material: ABS colour: Black Package Contents: 1 x Basketball Coaching Board((with pen) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.