#3166 Tens Kit w/Rech & Nicads With Timer TENS Units include lead wires electrodes instructions and carry case * Three Modes: B (Burst) N (Continuous) and M (Standard Modulation) * Dual Channel * Adjustable pulse rate and width * Pocket-size - easy operation * 3166J & 3166Q include Tens Unit reusable Electrodes (Pk/4) lead wires instruction booklet carry case recharger and 2 rechargeable batteries *