Lithium battery delivers up to 25 hours of continuous use, reducing how often you need to recharge. Working temperature range from 10 C to 40 C supports operation in a wide variety of environments. Battery capacity is 260 mAh, offering compact power with reliable performance. TF Card expansion supports cards up to 512 GB, enabling substantial storage expansion. Use scenarios On the go and travel: Rely on extended use between charges during long trips, commutes, or days away from power outlets. Media and data storage: Expand storage with a TF card up to 512 GB for music, videos, photos, or important files. Outdoor or variable conditions: Operates effectively in environments with temperature fluctuations from 10 C to 40 C, making it suitable for outdoor activities or job sites.