Product Name:Wired Voice Amplifier;Model:Z258;Support:OEM;Output power:10W;Battery capacity:3.7V/1800mAh;Supports MP3 audio playing:TF(Micro SD) card&USB;Charging Voltage:DC 5V, 500mA;Product size:106*86*42mm (170g);Plug Support:US/EU/UK Plug;Range:10000