TERA PUMP TRPMW100-N 2PK Electric Battery-Operated Home 5 Gallon Jug Drinking Bottled Water Pump with Switch Brand new Electronic Drinking Water Pump with on/off Switch Package Included: one battery-operated water pump & one elbow wit cap Pump Size: approx. Diameter 3 1/2" x H 28 1/2" (D 9cm x H 73cm ) Fits most standard bottled water size. Made of High quality PC Plastic, long lasting operating life. Unscrew the cap on the pump handle and insert <span class="a-text-bold"><span class="a-text-italic">two &#034;D&#034; size batteries</span></span> checking the polarity into the compartment. Adjust the bottle cap to the height of container and fix the pump with the fastner. Make sure to keep the tube cover <span class="a-text-bold"><span class="a-text-italic">1/4&#034; to 3/4&#034;</span></span> above the bottle of container for the <span class="a-text-bold"><span class="a-text-italic">best performance.</span></span> Assemble the<span class="a-text-bold"><span class="a-text-italic"> discharge spout </span></span>firmly to the <span class="a-text-bold"><span class="a-text-italic">discharge hole</span></span> Click the switch to turn on the pump and click again to <span class="a-text-bold"><span class="a-text-italic">stop. </span></span>To use just in short time,<span class="a-text-bold"><span class="a-text-italic"> push down </span></span>a little and hold the<span class="a-text-bold"><span class="a-text-italic"> switch</span></span>