As summer reaches full force, the Cult of Mac Store is turning out hot deals left and right. This week, we’ve got a tool for transferring pretty much any media file to any device, and a set of wireless headphones with a case that re-charges them. There’s also an app that will transform the way you take notes, and a bona fide heads-up display for your car. Read on for more details:

WALTR 2 – 50% off

When you try to move a video, ebook, ringtone, or other media file to your iPhone, iTunes can be more of a headache than a help. WALTR 2 is a simple file manager that bypasses converters and other complications. Just drag-and-drop any music, ringtones, videos, PDF, or ePUB files straight into any Apple device. There’s no need for iTunes or other external apps. Additionally, there’s automatic file conversion, content recognition, and support for iPods all the way back to 2001’s iPod Classic.

Buy now: Get WALTR 2 for $19.95, that’s half off the usual price.

1Voice Wireless In-Ear Headphones with Charging Case – 61% off

Wireless, Bluetooth earbuds are the ultimate in convenience. But they can be the ultimate inconvenience when the batteries finally wear out. 1Voice has a solution for this issue. First of all, they sport advance Bluetooth 4.2 for a crystal clear connection, and small but powerful 10mm drivers for seven hours of rich sound. Also, they’ve got a built-in mic and can sync with up to two devices at once. But the best part? They come with a special case that’ll charge them up to 7 times over.

Buy now: Get 1Voice Wireless In-Ear Headphones with Charging Case for $49.99. That’s a 61 percent discount.

MarginNote Pro for Mac – 50% off

Studying has changed in the digital age, and note-taking has to change too. MarginNote provides a powerful set of tools for quickly organizing, studying, and managing large volumes of digital study materials. Take notes, create mind maps, review flashcards, and more all in one central interface. Highlight and annotate passages, take notes directly into the margins and embed notes on EPUBs. Create hybrid notes, including voice, handwriting, picture, hashtags, and web links. And that’s just the beginning.

Buy now: Get MarginNote Pro for Mac for $24.99. That’s half off the usual price.

HUDWAY Glass Heads-Up Navigation Display – $49.95

One of the coolest aspects of flying a plane is the heads up display. It projects critical information right in the eyeline of pilots, and now you can get one for your car. HUDWAY Glass is compatible with any mobile HUD app (yes there are several of those). It projects information like speed, navigation data, and other key data right in your line of sight. Besides just looking neat, it’s also a great hands-free solution that can improve driving safety.

Buy now: Get a HUDWAY Glass Heads-Up Navigation Display for $49.95 at Cult of Mac Deals.