A. Although we recommend ProCOM for use with the ADVANCE X-Climb helmet, ProCom headsets will fit on any helmet compatible with 3M attachments. What’s more, these ear protectors have high sound reduction levels (SNR 29) and are adjustable and lightweight so you can get a comfy fit. You won’t be hunting for a USB charger often either, as these boast up to 38 hours of battery life – that’s a full working week of run time before needing to be charged. Place the connecting cable for the ear defenders below the helmet insert that was initially released, so that the connecting cable is then located between the helmet shell and the helmet insert. Between the noise reduction qualities and the limited volume, you shouldn’t need to worry about damaging your hearing, which is the whole point of the Dynamic BTs. Stihl Dynamic BT Ear Protector Specs With a high attenuation value (SNR 31) and active noise suppression, STIHL ADVANCE ProCOM headsets reliably protect against the engine noise of petrol-powered equipment. What’s more, an intelligent audio function means that incoming radio messages are prioritized and heard by the user, so that warning calls from colleagues can be heard clearly over any radio or music playing.

The hard-wearing headsets are available either as a headband unit, or as an accessory to fit STIHL ADVANCE X-Climb protective helmets. STIHL ProCOM can also be used with 3M compatible helmets from other manufacturers. The internal components are well insulated and IP 64 rated, meaning the STIHL headsets can be used come rain or shine, and the Lithium-Ion battery can last up to 17 hours on one charge. All the control buttons are large enough to be pressed with gloves on, and are intuitively designed to be used with touch alone, so that all functions can be accessed without taking the headset off. Generally, there are three different ways to replace trimmer line in a STIHL grass cutting head, depending on the model type.But not all noise is the same. In addition to the strength of the sound, the distance from the source of the noise is also important. For example, the question of whether an engine is directly next to the ear while working – as with hedge trimmers – or whether it is more than one metre away, as with lawn mowers, makes a difference. So it is important to know how much noise the ear is directly exposed to when choosing the right hearing protection.

Standard model heads: For these, first remove the head from the trimmer and open it up. Now you can access the empty spool you can wind trimmer line onto it. The arrows will help you to wind the line on in the right direction. If you find it difficult to refill and replace the trimmer line, your local STIHL dealer will be happy to help.

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Much like STIHL DYNAMIC BT ear protectors, it’s also possible to pair a smartphone so that users can answer phone calls or listen to music. Alternatively the in-built radio can be used with no smartphone required. The free ADVANCE ProCOM app adds extra functions such as saving your favourite radio stations, adjusting communication channels, and changing the microphone sensitivity to name a few. STIHL ProCOM Stats Thermography shows the advantages of a helmet with standard ventilation (right). The temperature fell by two to three degrees and the humidity increased by 50%. Ear protection