They have a lot to do with the Cambridge Audio Melomania 1 Wireless Bluetooth Earbuds. The sound is great and beautifully compact, but the big news here is about battery life. Despite how small they are, they last on a single charge for a whopping 9 hours of playback— twice the Apple AirPods! The battery case includes another 36 hours of battery life, and the buds charge from 0 percent to full in just 30 minutes if you happen to run them down. They’re amazing, and they’re $30 less than AirPods somehow.
From the Product Page:
√ Incredible Battery life – Up to 9 playback hours from a single charge. 36 hours additional charge – Carry case holds an extra 4 full charges. Charge headphones from empty to full in just 30 minutes.
√ Stunning sound quality – Graphene driver diaphragms deliver a superior listening experience with deep bass & clear treble.
√ Super Lightweight – Only 4.6g each, with a choice of silicon and memory foam earphone tips.
√ Bluetooth 5.0 – Superior connection with no drops in signal. Support for SBC, AAC, and aptX to deliver up to CD-quality audio.
√ 1-year warranty if sold from an authorized retailer.