and what's the accessory included?what should pay attention to?

1. The device itself consists of three parts: the smoking tip, the S1 flavor tube, and the 360mAh battery.
2. Before using this product you should charge the battery for up to 2-3 hours.
3. To insert the flavour liquid into the glass tube, unscrew the smoking tip and pour the juice/liquid inside the glass tube. (Pour it slowly while holding the clearomizer on a tilt.)
4. Refill the clearomizer slowly using your e-liquid dropper bottle until reaching the 1.6ml mark. (Be careful not to spill e-liquid into the centre white element.) 5. Screw the smoking tip back on again.
6. Finally, attach the battery to the tube.
7. In order to smoke the pen you must hold the button and simply inhale and exhale. (At this point you should hear a little hissing sound.)
8. The device has an on-off function, click the button 5 times in fast repetition and it will switch the device OFF. To turn the device back ON, click the button 5 times in fast repetition again.