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Plantronics has kept the controls on the 370 to a minimum. On the outside you'll find the multifunction call handling button, while on top there are two volume controls. However, the lack of extra buttons does mean that to work out how to use some of the more complex functions you have to resort to the manual. Unfortunately, only a quick start guide is provided in the box, so getting hold of the main manual involves a trip to Plantronics' website to download it. Nevertheless, the main call handling functions are straightforward.
To answer a call you tap the call button once, to reject a call you press and hold it for two seconds. To recall the last number dialled you tap the call button twice and to activate voice dialling you press and hold the button for two seconds when the handset is idle.
In terms of call quality the 370 is pretty average. People we called while using it said that our voice could be heard loud and clear, but complained that they could also hear quite a lot of background noise. This is not very surprising given the fact that the headset doesn't include any noise cancelling technology, apart from some wind shielding to protect against wind noise when outdoors. It's a shame, because surely the type of demanding environments that this headset is designed to be used in, such as building sites, are also noisy environments. The other issue is that the earpiece isn't as loud as those on some other headsets that we've used, which again is not great when you're trying to hold a conversation with a lot of noise going on in the background.
Charging the headset is carried out via the supplied wall charger, which connects to the headset via a microUSB port. The 370 can also be charged via a standard USB port, although no lead is included in the box. It takes two hours to fully charge the battery and Plantronics says that this gives it enough juice to keep it going for around eight hours of talk time. We got around seven hours out of it, but that's still very impressive. Unfortunately, the only notification of a low battery if when the multi-coloured LED on the outside of the headset flashes red. A proper battery icon would have been a welcome addition or at the very minimum some combination of button presses that could be used to check the current battery level via a sequence of flashes from the LED.
The headset doesn't support multipoint so it can't be connected to two handsets at the same time and also lacks support for A2DP audio stereo. As it's a mono device this is hardly a major loss unless you use your headset to listen to the footy results via your phone's FM tuner or something similar.
The Plantronics Explorer 370 is a bit of a mixed bag. While it's certainly tough enough to stand up to life in challenging environments and has good battery life, it's not all that comfortable to wear and disappointingly lacks noise cancelling features.
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