Features: 1.Blue Switch: Dot retro keycaps, simple and beautiful, with mechanical blue switch paragraph sense, mechanical sense is stronge, crisp keys. 2.LCD Display: Ten digit screen display, large font, reduce errors, improve efficiency, removable design, easy to clean. 3.Intelligent Shutdown: Calculator intelligent shutdown, long lasting battery life, calculator 7 minutes without any operation, will automatically shut down into standby mode (press ON C key to power on) 4.Antislip Feet: Soft feet are shock absorbing and antislip to prevent the body from colliding and rubbing against the desktop, preventing it from slipping and falling. 5.ABS Material: Calculator is made of ABS material, wear resistant and durable, not easy to damage, can be used for a long time. specification:Item Type: Blue Switch Calculator Material: ABS Battery: AAA Battery x 1 (Included) Battery Capacity: 700mAh Screen: 10 Digit LCD Display Key: 20 Keys, Mechanical Blue Switch PackageList: 1 xBlueSwitchCalculator (Ship with Inbuilt Battery) 1 xUser Manual 1 x Battery