1. Shell material: metal 2. Interface technology: nickel-plated 3. Power supply voltage: DC 9V 4. Bandwidth: 50Hz-5.5MHz 5. Operating temperature: 5-40 degrees celsius 6. Metal shell texture, heat dissipation performance is strong, easier to adapt to long working hours 7. Chip compatible with a variety of systems, fast transmission speed, stable and good results 8. Nickel-plated process interface, shielding interference, wear-resistant and rust-proof 9. Size: 21.7 x 8.1 x 3.8cm 10. Weight: about 565g
