Features 1、Two power ways: Solar power or 1pcs AAA battery, energy saving and convenient. (Battery is not included.) 2、Adopt Japanese LCD screen, 12 digits, display data clearly. Support +/-(negative)，%，√ calculation. 3、Support Rounding off and decimal place setting. With CE/C (part/all clear), MC/MR/M+/M- (memory) key. 4、Auto shut down in 8min if no further operate. With non slip silicon on the bottom for stability. 5、Big ABS plastic button, offer accurate positioning and comfortable texture, support over 1 million times press. 6、With non-slip silicon on the bottom for stability. 7、Multi-functional scientific calculator, nice helper for data dealers, improve your efficiency and accuracy! Specification Specifications: Model: ET-2135 Item Size: 19 * 15.5 * 4cm / 7.5 * 6.1 * 1.6" Item Weight: 300g / 10.6oz Package Size: 19.8 * 16.1 * 4cm / 7.8 * 6.3 * 1.6" Package Weight: 359g / 12.7oz Package List 1 * Calculator 1 * User Manual(English/Chinese)