The ElectraStim SensaVox EM140 is a powerful and advanced dual-channel electrosex stimulator designed for couples. It allows for individual control over two channels, enabling the use of up to 4 uni-polar or 2 bi-polar electrosex toys simultaneously. The intensity can be adjusted from 0 to 99 with separate dials for each channel, offering a smooth and comfortable progression of sensation. A 'boost' button provides a temporary increase in power for heightened experiences. The SensaVox features 9 patterned stimulation programs that can be customized, and also offers audio and microphone inputs for controlling stimulation via music or voice commands. Safety features include the unit always starting at 0 intensity and safe transitions between patterns. It can be powered by an included 9V battery or a worldwide mains adapter, with a power-saving mode for battery operation. The kit includes the SensaVox unit, connecting wires, microphone, audio lead, battery, mains adapter, CD, instruction booklet, and a hard case. Please note that electrode attachments are sold separately and this unit is compatible with any uni-polar or bi-polar toy accepting 2mm pin connectors. Warning: Not for use on nipples or chest.