Convenient Charging: Type-C charging port compatible with standard adapters. Red light indicates charging, and it turns off when fully . Long Battery Life: Built-in 4400mAh lithium battery provides up to 88 hours of continuous use on a full charge. Flexible Gooseneck Design: Adjustable probe for easy positioning to target the grinder's output area. Easy Operation: One-touch switch to turn the device on or off. Battery Level Indicator: LED lights show remaining lights on when full, and they turn off sequentially from right to left as battery depletes.