High Accuracy: The Bluetooth translator earbuds support 74 languages and 70 accents, powered by 4 premium translation engines for 97 percent translation accuracy. Low Latency: Equipped with 15 servers around the world, these language translator earbuds achieve a low latency translation of 0.5 seconds for almost seamless simultaneous translation. 4 Translation Modes: The language translator earbuds support 4 translation modes: touch, external playback, free speech and offline, which is convenient, flexible and smart. Long Battery Life: Bluetooth translation earphones are equipped with high capacity battery that can work continuously for 4 hours and standby for 120 hours when fully charged. Ergonomic Design: Wireless translation earphones are ergonomically designed and compact, no discomfort when wearing for a long time. Comes with 4 replacement eartips.