- System requirements: USB 2.0 port
- Frequency range: 20Hz ------ 20KHz
- Grinding Spool / Diameter: Φ50mm
- Rated sensitivity: 110 ± 3m
- Impedance: 22 Ohm ± 15%
- Speaker diameter: 50mm
- Interface: 2.0 USB
- Load impedance: 2.2 kΩ
- Maximum power: 30 mW
- Current: ≤60mA
- Voltage: DC5 ± 0.25V