| Function | M99A |
| MAX Display | 1999 |
| Over Load Protection | √ |
| Back light,Function characters Indication | √ |
| Hold Range | √ |
| Auto power off | √ |
| Auto Scan | OHM/DCV/ACV/DCA/ACA |
| DCV | 200mV/2V/20V/200V±0.8%±2,600V±1%±2 |
| ACV | 200mV/2V/20V/200V±1.2%±5,600V±1.5%±5 |
| DCA | 20mA±0.8%±5,200mA±1.2%±5,2A±1.8%±5,10A±3%±5 |
| ACA | 20mA±1.2%±5,200mA±1.8%±5,2A±1.8%±5,10A±3%±10 |
| Resistance | 200/2K/20K/200K/2MΩ±1.0%±3;20MΩ±2%±5 |
| Continuity Buzzer | √ |
| Diode | √ |
| Power Supply | AA1.5Vx2 |
| Size | 168x84x35mm |
| Weight | About 270g(include battery) |
Source: https://www.meterstesters.com/products/digital-multimeters/smart-multimeter-m99a.html