... 210x90x30mm ,weight: only0.5KG5.Large capacity power .Built-in rechargeable Ni-MH power, provide over12 hours of continuous operation6 ... LCD display .Display instantaneous flow, accumulated flow( positive, negative and net), volocitu, working status etc.7.Built-in data logger .Built-in ... 12 hours operation). or 100V-240VAC adapterData LoggerBuilt-in data logger can store over 2000 lines of dataManual ...