Quantity: One piece Model: AT34 Display screen: 0.96 inch color LCD display Measuring voltage: 3.70-30.00v Voltage measurement resolution: 0.01V Measuring current: 0-4.000A Current measurement resolution: 0.001A Capacity measurement range: 0-99999mAh Voltage measurement accuracy: (0.8%+4digits) at 25 Energy measurement range: 0-99999mwh-999.99wh Current measurement accuracy: (1%+4digits) at 25 Load impedance measurement range: 1Q-9999.9Q Power measurement range: 0-120W Temperature measurement range: 0C~80C/32F~176F Temperature measurement error: 3C/6F Operating temperature range: 0C~45C/32F~113F Refresh rate: 2Hz Product size: 64mm x 22mm x 12mm Product weight: 14g Real-time monitoring of charging status to protect charging equipment For the detection of charging equipment such as chargers and mobile power supplies, a variety of data are displayed on a single screen to meet various testing needs. Fast charging recognition is widely compatible AT34 supports QC2.0, QC3.0, APPLE2.4A/2.1A/1A/0.5A, Android DCP, SAMSUNG fast charging protocol identification allows you to know the charging status of your mobile phone! 4-digit precision measurement is more accurate AT34 uses a professional instrument sampling circuit inside, plus Ruideng's unique precision algorithm, The accuracy and stability of the product are ensured at both hardware and software levels! Guaranteed to store data when power off AT34 has a power-off storage function. When the power bank is powered off, it can store the capacity and energy data, which is convenient for later viewing, and it is convenient to measure the capacity and energy of the power bank! AT34 adopts a 0.96" IPS high-definition color LCD screen, which can display the charging status of electrical appliances in real time. Indicators such as voltage, current, capacity, energy, power, equivalent impedance, temperature, etc. at a glance!Good quality product