Watch out!Image by Rob Schultz\/MacworldThis week's roundup includes a new Bluetooth-enabled watch from Casio, plus cool new earbuds that can translate 40 languages, as well some snazzy new cases for your iPhone and iPad.CasioImage by CasioLooking for an alternative to the Apple Watch? Casio\u2019s new self-charging GravityMaster GPW2000-1A\u00a0($800) pairs via Bluetooth with the company\u2019s G-Shock+ app to track your travels\u2014it keeps a flight log, \u201cproviding a detailed graph of the user\u2019s movement history, as well as the ability to log and store previous travels.\u201d Its sturdy construction can survive bumps and water pressures down to 200 meters in depth.BargiImage by BargiThe Dash Pro ($329) is a set of Bluetooth earphones with a unique twist: You control the \u00a0device via your head gestures. It has in-ear biometric sensors that measure your steps and cadence if you\u2019re walking, pool lengths and breaths if you\u2019re swimming. The Dash Pro also offers iTranslate integration, letting you communicate in up to 40 language. Want them custom-fitted to your ears? That\u2019ll cost $499.JBLImage by JBLJBL\u2019s Flip 4 ($100) is a portable Bluetooth speaker. It is waterproof and offers up to 12 hours of audio playback on a single charge. It\u2019s available in black, blue, camo, silver, red, aqua green, and white.NomadImage by NomadHere\u2019s a backup battery you can\u2019t lose. Powerpack ($120) features Tile technology, making it easy to locate should you ever misplace it. And you won\u2019t want to lose it\u2014the battery offers 9,000 mAh of reserve power, giving your iPhone or iPad a quick boost when they reach the end of the day.PoqitImage by PoqitThis Kickstarter project caught our attention: Poqit (a $130 pledge) is a leather wallet that includes a wireless 2,500-mAh battery inside. (iPhones don\u2019t come with wireless charging capability on their own, but they\u2019re easy to accessorize so that it\u2019s possible.) The wallet keeps its slim profile, but you\u2019ve got power to get through the day.ShureImage by ShureThe MV88 Digital Microphone ($149) is an Apple-certified accessory that plugs into your iPhone or iPad to create \u201cbest in class\u201d stereo sound, wherever you happen to be. It\u2019s great for making music, or for podcasting on the go.SwarmBoxImage by SwarmBoxHere\u2019s an accessory designed pretty much for business events: You plug SwarmBox into a projector, then let meeting attendees log in via their iPhone or iPad. After that, use the device to get instant feedback from attendees in the form of polling, opinion surveys or even quizzes, with results instantly available. Other features include a \u201cpicture wall\u201d to allow the display of idea sketches, and a live blog to allow participants to comment on or ask questions of the presenter. Contact SwarmWorks to get a quote on the system price.Gadget ShoppingImage by Gadget ShoppingThe Cafele Case ($33.91) is \u201cultra-thin\u201d: \u201cThe coolest thing here is that this case won't increase the weight of your iPhone 7 too much. It will still keep your iPhone 7 light but sturdy enough to bear any impact it might face during everyday use.\u201d It comes in black, white, gray, and Rose Gold.iDlehandsImage by iDLEHANDSFrom Kickstarter, Omni Case (a $39 pledge) is an iPhone battery case that includes a functional Lightning socket\u2014it claims to be the first battery case to support Lightning earpods\u2014but also offers wireless charging capability. The case supplies more than 2,800 mAh of power, more than doubling the battery life of your phone.LuMeeImage by LuMeeThe LuMee Two case ($55) is built for selfies: \u201cthe LuMee Two case lights up a user's face with the simple push of a button. When the case is put in action, the light fills in the shadows, enhancing the photo and making the subject bright, beautiful and 'picture perfect'.\u201d It\u2019s built for the iPhone 6 and 7 generations.TargusImage by LuMeeThe VersaVu iPad case ($39) gives you a professorial look while toting your tablet about town. It\u2019s made with an exterior premium fabric and faux leather exterior with metallic accents. Open it up and you can rotate the tablet 360 degrees to create the best viewing and typing angles. It also features a holder for the Apple Pencil or stylus of your choice.STM GoodsImage by STM GoodsDux ($60) allows for easy folding into typing or viewing modes and includes a transparent back panel that accommodates barcode scanning or your other personalization. It\u2019s durable, too, with a polyurethane cover to repel occasional drips or spills.