Model = Major IV
Colour = Black, Brown 
Type: Dynamic
Sensitivity: 99 dB SPL (100mV @ 1kHz)
Impedance: 32 Ω
Frequency Range: 20-20,000 Hz
Drivers: 40 mm
Battery Performance:
Playtime: 80+ hours of wireless playtime
Charging:
Wireless charging capability
Quick charging: 15 minutes for 15 hours of playtime
Full recharge in 3 hours
Controls and Connectivity:
Wireless Connectivity: Bluetooth 5.0
Wired Connectivity: 3.5 mm input
Bluetooth Range: 10 m / 30 ft
Controls: Multi-directional control knob for music and phone functionality
Microphone & Remote: Yes
Comfort and Design:
Improved ergonomic design ensures comfort for long listening sessions.
Features include:
New ear cushions
3D hinges
Straight fit headband
Loop wire with reinforced rubber dampers