Comparison of rambler h750 and h650:
1. Unit diameter: 30 mm for h750 and 40 mm for h650;
2. Sensitivity: 91 dB for h750 and 103 dB for h650;
3. Headphone cable: 1 and 2 meters for h750 and 1 and 3 meters for h650;
4. Shell material: h750 is a double-layer high-grade leather earmuff, and h650 is a silica gel with a steel headband;
5. Frequency response range: 20 to 20000 Hz;
6. Product impedance: 32 Ω;
7. Wearing mode: all are headworn.