The zipper calculator is the perfect carry case for any graphing calculator. It is strong, , anti-shock, The wrist strap allows for more convenient transportation. Some of the calculators that the case fit are: TI-83 Plus, TI-84 Plus CE, TI-84 plus, Ti-84 plus C silver edition, TI-84 Plus Color Edition, TI-89 Titanium, HP50G Graphing Calculators etc. . The hard zipper case has a zippered mesh pocket on the cap to secure the charging . The accessory kit can fit in the pocket as well. The main compartment has an elastic strap to better the calculator. Convenient wrist strap for easy carrying, and the built-in mesh pocket for the charger and cable accessory Essential kit includes mechanical pencil, rubber, weatSeu material. With soft interior with knit layer inner pockets for cable / USB connector. Kit accessories includes the essential mechanical pencil, rubber, ruler graphics can be placed on the as well. colour: black Material: EVA size: 21.5 x 11.5cm Package Contents: 4 x Graphing Calculator Hard Carrying Travel Storage Case Bag 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.