Features:
- Portable voice amplifier for teachers, coaches, sellers, tour guides
- High fidelity voice, high-quality amplifying effect
- Supports FM radio playing, better controls the signal with external antenna
- Enables to play MP3 format audio files directly from TF card (not supplied)
- Digital number buttons with voice reminder, user-friendly for selecting FM station or music directly
- Comes with 1200mAh big capacity replaceable 18650 Li-ion battery, long-lasting standby time
Design: multiple functional
Compatible with: TF/microSD card
Supports: FM radio, microphone, TF card music playing, volume control
Connection: wireless
Interface: 3.5mm audio, micro USB, TF card slot
Audio source: electronic products with 3.5mm plug, TF/microSD card
Material: ABS
Colors: black, red
TF card extension: 32G to max (not included)
Number of speakers: 1
Speaker impedance: 4 ohms
Sound channel: mono
Power output: 3W
Standby time: 48 hours
Freq: 80Hz-20kHz
S/N: 70dB
Power source: battery
Charging voltage: 5V
Working voltage: 3.3-4.2V
Battery capacity: 1200mAh
Charging time: 6 hours
Working time: over 4 hours
Battery type: 18650 Li-ion battery
Battery voltage: 3.7V
Battery current: 0 - 1A
Packing contents: 1 x voice amplifier, 1 x USB cable, 1 x headset microphone, 1 x battery, 1 x English manual