The SHIDU T1 is a waterproof, portable buckle TF card wireless Bluetooth 4.0 speaker with a built-in microphone. It features 360° surround stereo sound, smart voice prompts for low battery, supports hands-free calling, and can play MP3 and WAV formats from a TF card (up to 32GB). The compact design is easy to carry, weighing 0.3kg with dimensions of 8*3cm. It has a transmission distance of 8m, output power of 5W, and a battery capacity of 800mAh, providing 5-6 hours of working time and a 2-3 hour charging time. The package includes the speaker, charging cable, buckle, and manual.