The most important features are the safety features!

The voice/sound will always be heard through Motorola radio even though the other device is active. This is an important feature of safety.
PTT- talk on shell enables to communicate by pressing the rotary switch on the left ear cup. It is mechanically reliable and easy to use even when wearing work gloves. 
If you are having a mobile phone conversation (or the other device is active) and you push the Motorola PTT rotary switch, your voice will be heard in both devices. This is also an important feature of safety.
Bluetooth®

Qualified Bluetooth device, for wireless connection to a mobile phone or communication radio.
Wireless transmission range approximately 10 m
A2DP, HFP ja HSP profiles and has a stereo music player feature
Push-To-Talk- on shell
Easy to connect by simple pairing feature
Level dependent
Active ambient sound reproduction protects your hearing from harmful noise while warning signals, speech, instructions and other signals in lower levels of noise can be heard.
Improves safety by not isolating the user from the surroundings
Maximum sound pressure level from earphones is limited to 82 dB.
 

Highlights

Unique casting technique to protect the electronics
Rechargeable Li-on battery and charger included, operating time 100 h or 20h when Bluetooth active
Low battery warning and automatic switch off after 5 hours
Robust flex-boom mic with excellent background noise cancellation
Gel filling and padded headband and spacious cups for the maximum user comfort

Passend zu :

DP3441e  DP3661e  DP4401  DP4401e  DP4601  DP4601e DP4801  DP4801e  SL4000  SL4000e SL2600