1、Real-time detection of the voltage, current, power and other data will be clear at a glance 2、Small size, portable to carry, no extra power required 3、The shell is made of high quality ABS material, high strength, good transparency 4、Suitable for most applications, such as phone, power bank, pad, other electronic products 5、Adopt exquisite SMAT technology, can measure USB powered devices and is compatible with the QC2.0/QC3.0 fast charge test Features: Real-time detection of the voltage, current, power and other data will be clear at a glance. Small size, portable to carry, no extra power required. The shell  is made of high quality ABS material, high strength, good transparency. Suitable for most applications, such as phone, power bank, pad, other electronic products. Adopt exquisite SMAT technology, can measure USB powered devices and is compatible with the QC2.0/QC3.0 fast charge test. Specification: Shell Material: ABS USB: USB 2.0 Current measurement range: 0-3A Accuracy: 0.01 Capacity accumulation range: 0-9999mAh Power measurement range: 0-90W Power Supply Range: 0- 999.9wh Size: Approx. 70*25*10mm/2.8*1*0.4inch Weight: Approx. 16g / 0.6oz Package List: 1 x USB Tester Note: 1. Please allow small size error due to manual measurement. Thanks for your understanding. 2. Only a USB tester, no other stuff included.