Science fiction is full of cool technology that would definitely change lives if it were real — teleportation, hoverboards, invisibility cloaks, jetpacks, exoskeleton suits. But the real world also has some neat gadgets, and until March 5 you can grab a few at Jet.com as it cuts an extra 30% off select electronics via coupon code "ELECTRICMARCH30". (A max discount of $30 applies. Shipping adds $5.99, but orders of $35 or more bag free shipping.) That's tied with our December mention as the best extra discount we've seen on this category at Jet.com, so we've rounded up six items that will improve your daily existence. 6 Electronics Picks to Make Life More Convenient A Durable Camera Activeon DX 1080p Action Camera for $20.99 plus $5.99 s&h via coupon code "ELECTRICMARCH30" ($9 off) Don't risk your phone taking photos and videos at the pool when you can use this waterproof camera instead. It's compact, so bringing it along won't be a hassle, and you'll no longer have to worry about whether you're in a splash zone. Cheap Batteries Duracell CopperTop AA Alkaline Batteries 72-Pack (add 6 to your cart) for $25.80 via coupon code "ELECTRICMARCH30" (a low by $15) Rechargeable batteries are an amazing invention, but it's so freeing to just toss old batteries and put in fresh ones rather than dragging out the charger when the time comes. At 36 cents apiece, this stockpile should last you a while without breaking the bank. The Sound of Silence Monoprice Noise Cancelling Headphones with Active Noise Reduction Technology for $62.99 via coupon code "ELECTRICMARCH30" (a low by $16) For those days when ambient noise is too overwhelming, these headphones have active noise reduction to block outside sound so you can listen to music or just concentrate in silence. They also feature a passive option, so you can still get some quiet in environments where being totally oblivious isn't okay. Smart House Wink Connected Home Hub for $35.86 via coupon code "ELECTRICMARCH30" (a low by $15) We live in the future. You can control your lights, locks, and thermostat right from your device with this hub, which will be sure to impress your friends and save you hassle. Personalized Security Canary Security Device All-in-One Home Security Solution for $137 via coupon code "ELECTRICMARCH30" (a low by $30) This security system learns and adapts to your home over time, then sends video and audio notifications to your phone when something seems off. It'll make you wonder how you ever managed your anxiety without it. Unbreakable Beats Altec Lansing Mini Life Jacket 2 Bluetooth Waterproof Speaker for $55.79 via coupon code "ELECTRICMARCH30" (a low by $19) No matter what kind of adventures you get up to, this speaker will be there to play your music (and phonecalls, if you're into that). It's sandproof, waterproof, snowproof, dustproof, and shockproof, and it floats if you happen to drop it in liquid. It's the Kimmy Schmidt of audio playback. Readers, what inventions that have made your life easier? Is there anything in Jet.com's electronics sale that you plan to pick up? Let us know in the comments! Related DealNews Blog Posts: There's a 50% Chance You're Overpaying for Almost Everything 8 Things to Buy in March (and 3 Things You Should Definitely Skip) Should You Do Your Own Taxes?