Cordless mini Speaker Portable Voice Amplifier for Singing Training Yoga White Description: [Powerful Voice Amplifier] Stable performance, clear sound. It strengthens your voice and saves your throat when you have difficulty speaking loud enough. [Rechargeable Voice Amplifier]Voice Amplifier built into 5W 4800mAh lithium battery. Working time up to 10 hours. The LED indicator will remind Ci in advance of charging. [Portable Voice Amplifier] compact and easy to carry. This microphone-speaker system is a portable sound system. You can take it to many places. [Supports music playback] Supports TF card input for music playback, you can switch za key, repeat and cyclically all music za key. It also has an antenna and supports radio FM, you can listen to your favorite channels in real time. [Application] Portable voice amplifier very suitable for teachers, guides, promoters, fitness and yoga instructors, etc. Great speech to over 50 members in your group. Size Chart: 9 cm x 3,6 cm x 8,5 cm or 3,54 inch x 1,42 inch x 3,35 inch The package includes: 1x voice amplifier 1 USB cable