Somehow, I always manage to leave the house in the morning with fully charged headphones, but rarely do I remember to charge and bring a power bank. It's not as though the former is essential, and the latter nonessential -- I need both to get through any big day out.Smartphone-maker HMD come to my rescue with its new Amped Earbuds, announced at Mobile World Congresshere in Barcelona on Sunday. The buds come inside a reverse charging case that packs a 16,000 mAh battery -- definitely enough to be a great backup option if your phone runs out of charge and you need a quick top-up.Not only can the case wirelessly charge HMD phones like the Skyline, but it can charge other wireless-charging compatible phones too -- the iPhone, for example. If your buds run out of charge, you can also charge them from your phone. This is a nifty idea -- a real two-birds-with-one-stone solution -- that could set the Amped Earbuds apart from other smartphone manufacturer-branded headphones, which are plentiful and often tricky to distinguish between.The buds also offer active noise cancelation for a peaceful listening experience and environmental noise cancelation to keep your calls nice and clear. There's equalization control available too if you go to the effort of downloading the dedicated Android or iOS app.If you're a minimalist, often short on space, or, like me, just incapable of keeping more than one item charged at any one time, the Amped Earbuds could be the ideal solution.