- Waterproof battery compartment
- Waterproof microphones for surround hearing and optimum sound direction location (IP67 tested).
- ASIC
- Battery save function, low battery warning (40), auto shutdown (4h), battery life time 600h.
- Sound level limitation, max 82 dB(A)
- Two loud speakers in each cup, one for surround hearing and one for radio/communication. Radio/communication works even when batteries are out.
- Applicable tests made in accordance to MIL standards MIL-STD-810g and EMC-MIL-STD-461G.
