HP has announced it is launching five new models of its ProBook 400 series of notebooks made for the business market. The laptops include a new design and improvements in battery life for up to 16 hours of use.

HP ProBook 400

HP's blog post states that the company conducted a survey of "millennials" and over 50% of them stated design was important when selecting a PC:

HP took this feedback to heart in the ProBook 400 series with a new thinner, slim line wedged design. New color styling called Asteroid Silver and a bright reflective HP logo gives a high-end look without the price and makes fingerprints virtually invisible. The ProBook 400 series also has a new enlarged clickpad with an optimized easy-to-use touch zone. And HP's devices – while beautiful on the outside – are still built to last, passing MIL-STD 810G testing including drop, shock, vibration, dust and temperature, plus 120,000 hours of HP's own testing and end-to-end diagnostics.

The HP ProBook 400 series also include some speaker and audio improvements:

HP Audio Boost technology, has been added to help improve voice quality by enhancing speaker loudness and bass levels. HP is introducing bi-directional noise suppression capabilities to its ProBook 400 family to significantly reduce background distractions on both ends of the line. The ProBook 400 series has an embedded feature that detects voice, music or movies and adjusts audio settings automatically to assure the best-possible listening experience.

The 13.3-inch HP ProBook 430, the 14-inch ProBook 440, and the 15.6-inch ProBook 450 can also have touchscreens as an option, while the 15.6-inch HP ProBook 455 and the 17.3-inch HP ProBook 470 do not have touchscreen options. All but the ProBook 455 use versions of Intel's 7th generation Core "Kaby Lake" processors; the Pro 455 users AMD's 7th generation A-Series APUs.

Pricing for the notebooks start at $499; all of them are available to order from HP's online store:

See the HP ProBook 430

See the HP ProBook 440

See the HP ProBook 450

See the HP ProBook 455

See the HP ProBook 470