High-Quality Sound: 40mm drivers for immersive audio experience. Long Battery Life: Up to 36 hours of playtime on a single charge. Bluetooth 5.3 Technology: Fast and stable connectivity. Safe Performance: Supports NTC temperature control for safety. Comfortable Design: Suitable for all-day use. Technical Specifications Version: Bluetooth V5.3. Chip: JL. Speaker Size: 40MM. Bluetooth Range: ≥10 meters. Battery Capacity: 300mAh. Charging Time: Approximately 2.5 hours. Bluetooth Playtime: Up to 36 hours. Support: NTC temperature control. Why Choose WiWu Solar TD-06? Incredible audio performance for all your needs. Lightweight and practical design for extended use. Advanced technology for stable connectivity and safety.