The Bp MOD AMPBB (Internal Battery Boro Mod) + DACBB (AMP: Amplifier DAC: Digital-to-analog Converter Boro Mod) Kit is design for the audiophile of Boro Kit Lovers. Most appearance design points, like the windows, the LEDS and light tubes, and the visible electronic components, were inspired vacuum tube power amplifiers, power by 2000mAh battery. and compatible with the most of Boro tank, and this small size is good for you on the go. Weight : 100g (3.53oz)