Autosave on poweroff: When the battery is low, the device automatically saves the current recording and shuts down to prevent data loss. Onekey recording and saving: Simple onebutton operation to start recording and save, ensuring data is preserved before poweroff. Local playback and music: In addition to a voice recorder and keychain, you can listen to music during downtime, making it a practical companion on business trips. 25 hours of uninterrupted recording: Builtin energy polymer lithium battery with an intelligent energysaving system, delivering longterm recording in a compact size. Key attributes: Keychainfriendly compact form factor, builtin polymer lithium battery, intelligent powersaving system, and reliable recording performance. Use scenarios: Meetings and interviews: Quick onebutton recording with automatic save to protect important notes and quotes. Business travel: Portable device that records on the go and also plays music for downtime, reducing the need to carry multiple devices. Field notes and audits: Long battery life and automatic save feature support extended recording sessions without data loss.