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What's New, What's Hot is Travel Weekly's look at useful and fun travel gadgets, edited by Joe Rosen. First up, the Ztylus Revolver Lens and iPhone 5S Case. The system adds wide-angle, fisheye, macro and circular polarizer lenses to your standard iPhone photo capability. To switch from one lens to another, you simply rotate the turret to the proper position and gently push the lens of choice into place. The Ztylus system is also available for the Samsung Galaxy and Galaxy Note.

Designed for the iPhone, the Olloclip 4-in-1 Lens system enables you to easily add fisheye, wide-angle, 10X macro and 15X macro lenses to your device's optics. A separately priced telephoto lens and circular polarizing lens are also available. Taken together, the lenses can easily fit into a pocket or purse. Also available is a Quick-Flip case for the iPhone 5/5s and 4/4s that features a corner that rotates so a lens can be attached while at once serving as a handy shutter release. Included with the case is a removable tripod mount.

The Magellan RoadMate 6230-LM GPS combines full GPS functionality, including free map updates (U.S., Canada, Puerto Rico), traffic cam alerts and landmark guidance, with an integrated, forward-facing dashboard cam that can be used to document landmarks and, more importantly, review and record the event immediately preceding and following a car accident. The video footage, which can be saved, captures a 120-degree-wide viewing angle. Once a video is locked, it can be replayed on the device itself or on a Windows-based computer.

There is still plenty of warm weather left for the Vertty Beach Towel from Portugal, a designer beach towel that is distinctive in several ways. For starters, it is 4 inches longer and 30% lighter than most other beach towels, dries faster and has a waterproof pocket to safely house, for example, your smartphone. The towel, which has a zigzag design and comes in nine color choices, is made of a fabric that is 90% cotton and 10% polyester. Vertty maintains that all chemicals and textiles used to produce the handmade towels are ecofriendly.

In light of the TSA's recent ban on dead batteries on some international flights, consider the following portable power supplies for use when traveling. First up is MyCharge RazorPlus. This sleek battery pack, housed in a slim, anodized aluminum case about the size of a cellphone, provides 13 hours of talk time, a high-density 3,000 mAh battery promoted as shortening charge time by 25%, a four-light LED battery life indicator and pass-through technology that enables the RazorPlus and your device to be powered simultaneously.

At once a charging cable and a power booster with a lithium-polymer battery, Jump Cable, according to its manufacturer, provides 30% extra charge to an iPhone and up to three hours of extra talk time while weighing only 1.4 ounces and measuring a meager .53 by 1.96 inches. The cable, when unfurled from its housing, stretches a full 19 inches.