The moisture meter can quickly measure the moisture content of the grain. 1. Multiple uses: The voice amplifier is compact and portable for presentations, meetings, teaching, and other outdoor activities. 2. Clear and stable sound: With premium 3-inch speaker has powerful sound amplification effect, the sound is clear, stable and not easy to deform. 3. Input method: Mini voice amplifier supports different sound input modes, U drive can be inserted, memory card, customized according to different sound input needs. 4. Long battery life: The belt amplifier has a built-in 2200mah battery that can be used for up to 10 days on a single charge. 5. Multifunctional: This portable voice amplifier can also be used to play classes, with a headset microphone that has a very wide range of uses. . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING Specification: Item Type: Voice Amplifier Material: plastic Black color Battery: 1x18650 Lithium battery (supplied with built-in battery) (2200mah) Memory card slot: without memory card . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING List of packages: 1 x Charging Cable 1 x Voice Amplifier 1 x Headset Microphone 1 x belt 1 x User Manual . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING . VOICE AMPLIFIER DISPLAY WITH THE POSSIBILITY OF CHARGING