1. Hold the operating handle with both hands after entering the water. 2. Press the tail with elbow joint (completely submerged) so that it is slightly lower than the nose (1/3 out of the water). 3. Put the tail on the chest and press it with a swimming ring. 4. Press the right hand to start the switch and operate the propeller. 5. both arms slowly relax and press the tail so as not to surface. 6. While the machine is running, the legs are slowly lifting back. 7.the machine in the water in a perfectly straight line with the human. 8. Release the right hand to start the switch and the machine stops running. 9. Suitable scope: playground, swimming pool, river, lake, ford, pond, bath pool. 10, diving can swim, swimming more fun, diving more exciting, other equipment other than the product. Note: When you open the cover to connect the battery to the motherboard, make sure the socket is in the right direction. Otherwise connected to the wrong battery easy to burn out the motherboard. A little more careful, remember the battery on the data line up and down the direction of alignment.