- Dimensions: 76mm x 40mm x 16mm - Durable plastic shell construction - Resistance: Above 0.8ohms - Output Voltage: Low 3.0V / Medium 3.4V / High 3.8V - Battery Capacity: 650mAH - Fits 0.5ml Tanks with Medium Magnetic Adaptor - Fits Most 1ml Tanks with Short Magnetic Adaptor