Product details of Aporo T3 Wireless 10W Portable Voice Booster Amplifier Speaker +UHF Headset Mic Output:10W Frequency Response: 50Hz-12000KHz Battery Specification: Lithium battery 3.7V/1000mAh Charging time: 4.5hours Working temperature: -10℃~45℃ Dimensions:4.1 x 3 x 1.1(inch) (LxWxH) Features: 【Super mini& Lightweight】128g 【Professional Smart Amplifier】:T3 Noise reduction 99.9% and Sound covers over 5000 Square feet/500㎡,Multifunctional Design,Adjustable Headset Microphone,Waistband,Belt and New design removable clip 【Bluetooth 4.2 Speaker&FM Radio】: We Imported Korean chips and used inner-magnet trumpet for giving our customer a Hifi Amplifier/speaker,The newest Bluetooth 4.2 transmission and Tf Support allows you listen to music from your smartphone or tablet from up to 30 feet away.Compatible with all Bluetooth-enabled devices 【AAA Grade/Level Battery】:100% Safety,It has passed by MSDS and provide 8 to 10 hours(microphone mode)/6-8 hours(music mode) long using time UHF Wireless Technology: No need to set FM radio frequency, turn it on and the microphone connect automatically with the speaker, better noise reduction compared to the FM wireless. Bluetooth: The Bluetooth functions enables you to connect with your phone and other bluetooth device, to play music or other sound tracks (Note: the Bluetooth input and UHF Input from the microphone can NOT be played at the same time for this mini speaker) Bluetooth loudspeaker with Wired Mic OR FM Wireless Microphone(clear sound v wired)