Activate the ANC and of course this ramps up to another level. It’s very effective at taking out lower frequency rumbles, which is great for reducing the general din of traffic. In fact it works well in conjunction with the passive noise isolation of simply wearing the headphones, which tends to filter out higher frequencies but have less effect on lower rumbles. The result is a fairly even drop in noise across the range, which is nice as it means what noise does leak through sounds natural.

The headphones' staggering 24-hour battery life delivers and is a killer feature for travelers who can’t be tethered to an outlet, and while the active noise cancellation isn’t the best in the industry, it's still very good at muffling the sound of the noisy, sleep-depriving outside world. Poly's obligation under this Limited Warranty to repair or replace products that manifest a defect in materials or workmanship ceases upon the expiration of the Warranty Period.Poly may repair or replace products under this Limited Warranty: (a) with new or reconditioned products, parts, or components, or (b) with a similar Poly product if the eligible product under this Limited Warranty has been discontinued. For an end user customer with a Poly product that is within the applicable Warranty Period and has a defect that is covered by this Limited Warranty, Poly will repair or replace, at its option, the Poly product if you provide notice to Poly and return the product to Poly in the manner described in this Limited Warranty.

POLY MAKES NO OTHER EXPRESS WARRANTY WHETHER WRITTEN OR ORAL AND POLY EXPRESSLY DISCLAIMS ALL WARRANTIES AND CONDITIONS NOT STATED IN THIS LIMITED WARRANTY. TO THE EXTENT ALLOWED BY THE LAW, POLY DISCLAIMS ALL IMPLIED WARRANTIES OR CONDITIONS, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. The slightly loose grip and fairly high weight of these headphones means they’re a little more prone to shifting around. They likely won’t actually fall off, but they definitely don’t feel overly secure.Perhaps more than them being out-and-out stylish is that they instantly come across as a quality product, thanks to top-notch build quality. There’s a real robustness to them and they’re finished very nicely indeed, with no hint of a misaligned joint or sharp edge. This does add up to them being a little on the heavy side, though. At 340g they’re 80g heavier than the Beats Studio Wireless. In the unlikely event that your Poly product has recurring failures or Poly is unable to repair or replace the Poly product, Poly will provide you with a replacement Poly product that is selected by Poly and is the same or similar in performance. products that have (a) serial numbers or date tags that have been removed or altered, or (b) nonconforming or non-Poly housings or parts; and Unauthorized use of common carrier communication services provided by another company/third party accessed through the product; The benefits provided under this Limited Warranty are in addition to other rights and remedies provided under Australian and New Zealand Law.