The main difference between the H3331 and the H3335 is that this headset has a Push To Talk Switch located on the earcup whereas the H3335 switch is a mic on/mic off switch and not a push and hold to talk.

• DC-1A noise-cancelling amplified dynamic microphone
• Microphone Momentary PTT switch on ear dome
• Soft foam head pad with ribbed design and foam ear seals for exceptional durability and comfort
• Hinged wire boom for easy microphone placement on right or left side
• 15-foot straight cord with 1/4" TRS plug mates with C31-XX extension cords
• Corrosion-proof, chrome plated, headband/stirrup assembly
• Certified Noise Reduction Rating (NRR): 24db