Using the Milwaukee 2890 - 20 M18 Jobsite Radio is easy. First, if you're using an M18™ battery, insert it into the battery slot. Or, you can plug it into an A/C outlet. To tune in to a station, use the digital AM/FM tuner and the 10 station presets. You can also customize the sound using the EQ. For external devices, connect them via the 3.5mm Aux In Port or charge them using the 2.1A USB charger. When it comes to maintenance, keep the radio clean by wiping it with a dry cloth. Avoid exposing it to extreme temperatures and moisture. If you drop the radio, check it for any visible damage before using it again. Also, make sure to store the radio in a safe place when not in use, and keep the auxiliary compartment closed to protect it from dust and debris.