This is a multifunctional portable loudspeaker with sound-amplifying and digital music playing capabilities. Features a high-power amplifier chip and advanced amplifier control. Equipped with high-power speakers for clear, loud sound with wide coverage. Includes a high-capacity, high-safety, class A 18650 lithium battery. Output power: 12W Charging voltage: DC 5V 1A Frequency response: 50Hz - 15000Hz Operating temperature: -10C to 45C Amplification usage time: Up to 12 hours at 60% volume Charging time: 4 hours Battery capacity: 1200mAh Expandable memory: Supports up to 32GB Notes: 1. For optimal sound amplification, position the microphone head 1cm in front of the mouth and speak directly into it. 2. If feedback occurs, reduce the volume and increase the distance between the microphone and the speaker to prevent interference. 3. It is recommended to fully discharge the battery before recharging. If the device is not in use for an extended period, charge it once a week. Color: White Material: ABS Dimensions: 88 x 88 x 42mm Package Contents: 1 x Voice Amplifier 1 x Wired Microphone Headset 1 x Waistband 1 x USB Cable Note: The package includes only the items listed above. Other items are not included. Light reflection and display differences may cause slight variations between the product color in images and the actual product. Measurement may vary by +/- 1-3cm.