[Clear and Loud Sound and Multiple Format Support] Amplify your voice and save your energy whenever needed. Provides clear and stable sound, ideal for group settings with large audiences. The product serves two main functions: one as an amplifier, and the other as a versatile speaker. The speaker supports MP3 and WAV formats. A music player is included, featuring two interfaces: one for a TF card and another for a USB flash drive. [Versatile and Practical] Powerful, portable, and easy to use, this amplifier speaker system is essential for various situations. It can be used to ensure your voice is heard during meetings, teaching sessions, outdoor events such as weddings, and for tour guides. [Rechargeable] Equipped with a built-in 1200mAh lithium-ion battery. The device fully charges in 2-3 hours and provides up to 3-4 hours of amplification or 4 hours of music playback. The amplifier delivers clear, stable, and loud sound suitable for coaching, presentations, training, and teaching in large spaces. [Mini Size to Carry] Compact and lightweight, this device can be used anywhere, whether for teaching, outdoor activities, or other on-the-go needs. Despite its small size, it features a built-in loudspeaker that delivers strong audio performance. [Indicator Light Design] The device includes an indicator light system for easy monitoring. A blue light appears when powered on and flashes when a TF card or USB flash drive is inserted. When the battery is at 10%, the blue light flashes. During charging, a red light stays on until the battery is fully charged. Portable Voice Amplifier with Wired Microphone, Speaker, FM Radio, and MP3 Function Supports USB flash drives and TF cards Audio power: 5W Battery capacity: 1200mAh Charging: Standard USB 5V (compatible with mobile phone chargers) Color: Black Material: ABS Size: 8.5 x 8.5 x 3.3 cm Package Contents: 1 x Portable amplifier 1 x Wired microphone 1 x Charging cable 1 x Belt clip Note: Differences in lighting and display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.