- Designed by design affair, inspired by launchpad. - Dual-Mic ENC call noise cancellation - 13mm tailor-made titanium-coated diaphragm - Up to 24 hours of battery life with 2C fast charging - Bluetooth dual-device shifting - Low Latency Mode for game - Support brand new Bluetooth 5.3 - Support fiil+ App (EQ, control, etc) Designed by design affair from Germany. The KEY in music. Designed by design affair team from Germany. Inspired by the keys in the launchpad, FIIL Key is also the "key" to your music life. Design should not be just design, FIIL Key's earbuds are also one of the lightest among FIIL products, we hope that every music lover can forget its existence and just enjoy the music. Bluetooth 5.3 with Low Latency Mode for gaming FIIL Key supports the new Bluetooth 5.3, bringing faster and more stable connections. In addition to Bluetooth 5.3, FIIL Key supports game low-latency mode, which brings a more stable and smooth gaming experience when enabled in the fiil+ App Dual-Mic ENC call noise cancellation FIIL Key supports Dual-Mic ENC call noise cancellation. Dual-Mic can accurately identify call noise and reduce ambient noise through algorithms. Even if you are in the subway, the person answering your phone can hear your voice clearly. Bluetooth dual-device shifting Want to switch devices connected to FIIL Key via Bluetooth at any time? FIIL Key supports Dual-Device Shifting, after fiil+ App activates this function, long-press the earbud for 4s, and you can easily switch Bluetooth devices. Up to 24 hours of battery life with 2C fast charging FIIL Key has a compact body design, but can be used continuously for 5 hours on a single charge, with a total battery life of up to 24 hours, and can be charged once a week for daily use. 13mm tailor-made titanium-coated diaphragm FIIL Key uses high-quality dynamic drivers, but this is only one aspect. The excellent sound adjustment ability of the FIIL technical team over the years is the soul of FIIL Key's