【Versatile Connectivity】Supports Bluetooth-compatible connection with smartphones and tablets, USB drive playback, and music streaming for maximum flexibility. 【Wireless Microphone Included】Comes with a wireless clip-on microphone for hands-free operation, perfect for teachers, presenters, and performers. 【Multi-Scenario Use】Ideal for various settings including teaching, meetings, tours, performances, training sessions, and lectures. 【Long Battery Life】Enjoy up to 12 hours of continuous use and 30 days of standby time, ensuring reliable performance throughout extended sessions. 【Compact and Portable】Weighing only 225g with dimensions of 128*88*40mm, this amplifier is easy to carry and set up anywhere. 【Recording Function】Supports one-touch recording and loop playback with TF card insertion, perfect for creating and reviewing educational content. 【High-Quality Audio】Features a 4Ω5W speaker for clear and powerful sound projection in various environments. Specifications: Model: WK-01 Bluetooth-compatible Version: 5.4 (Dual-mode connection) Wireless Range: Up to 10 meters Speaker Impedance: 4Ω5W Chip Speed: 2.4GBPS Main Unit Battery Capacity: 2000mAh Main Unit Weight: 225g Main Unit Dimensions: 128*88*40mm Microphone Battery Capacity: 80mAh Microphone Sensitivity: -34±2dB Microphone Signal-to-Noise Ratio: ≥60dB Microphone Weight: 22g Microphone Dimensions: 47*17*9mm Interfaces: 2x 3.5mm, Pause/Voice Control Button, TF Card Slot, Type-C