... plastic moisture-proof shell, mechanical keyboard, 6 digits 8 segments digital tube glow display, customer an Moisture-proof Digital ... and digital processing technology, 6 digits 8 segments digital tube glow display.2) Specification:Model Maximum(Kg) Weight Scope (Kg) ... supply detection, battery charge automatically, and under - voltage alarm.8) Battery :4V,4AH Battery charge need 9~10hours. Normal ...