Twin power tactics: Solar energy or 1 AA battery (Battery Integrated) , power saving and handy.
Undertake Jap LCD monitor, 12 digits, show knowledge obviously.
Give a boost to +/-(bad)，%，√ calculation; Rounding off & decimal position surroundings; CE/C (phase/all transparent), MC/MR/M+/M- (reminiscence) key.
Automobile close-down in 8min if no additional operation.
Large ABS plastic button, be offering correct positioning and at ease texture, Give a boost to >1 million instances press.
