The rumor mill built up a good deal of hype for the HTC Bolt - an un-Googled Pixel XL with extra stuff like waterproofing and fancy new headphones, what's not to love? HTC and Sprint (which has exclusivity on the phone in the US) even roped in famous sprinter Usain Bolt for the promotion of the phone. The HTC Bolt is carved out of aluminum using the HTC 10 design, but at a larger scale - the screen is 5.5" with QHD resolution. And the body is dust and waterproof - IP57, something neither the HTC 10 nor Pixels have. HTC specifically mentions that you shouldn't submerge it intentionally,...
Source: http://www.gsmarena.com/htc_bolt_dashes_to_sprint_a_55_phone_with_htc_10s_design_ip57_too-news-21565.php