Dial down noise in busy workplaces with these electronic ear defenders from 3M. They block out 30dB of noise for effective hearing protection around heavy-duty machinery. An adjustable headband lets you find a comfortable and secure fit. Thanks to Bluetooth connectivity, the headset links wire-free to your phone, so there's no risk of tangling. Don't worry about background noise during calls, as the unit's noise-cancelling microphone means you can always make yourself heard.

• Electronics are enclosed in the outer section of the cup to minimise the risk of corrosion
• Robust plastic and steel construction stands up to heavy handling
• Battery life delivers up to 78 operating hours for long-term working

• Factory floors
• Demolition industry
• Forestry work

Yes, there's a push button that stops its noise-cancellation feature if you need to listen for a signal or speak to a colleague.