... standard3)All product has good quality,we don't sell bad one.If you want too cheap ... USB1.1 interface•Clock display function•Exempt driver,don't need to install any software•LCD display contrast ... .•Dimension:6x6.5cm 1)If the weight doesn't over 100kg,plz choose express delivery(UPS,EMS, ... so safe,plz give insurance request. 1)Payment:T/T,westorn union,escrow,paypal,MoneyGram or other2)Buyers need ...