Extended operation with a lithium battery: 25 hours of continuous use, reducing how often you need to recharge. Broad operating temperature range: reliable performance from 10 C to 40 C, suitable for varied environments. Compact power and storage options: 260 mAh battery capacity combined with TF card expansion up to 512 GB for scalable storage needs. Expandable storage: TF card support up to 512 GB enables you to store more data, media, or recordings without changing devices. Use scenarios Field work and data logging: operate for long periods without access to power, while expanding storage with a TF card up to 512 GB to capture more data. Travel and mobile use: carry less frequently charged devices and rely on large TF card capacity to keep music, documents, or recordings on hand during trips. Environments with temperature variation: functional in cold and warm conditions, maintaining performance across everyday outdoor or workshop settings.