Then the brain senses this nerve stimulation and reminds or trains the snorer him/herself to change the sleeping posture

Whether explosion-proof: Yes

Size: see the picture below

and you don't need to worry about it falling off

instruction manual*1

Upgraded Single Propeller Four Way Remote Control Helicopter, RC Toy Fashion Then the brain senses thisProduct information: Material: PA Nylon Product size (CM): rotor diameter 245mm fuselage length 245mm height 77mm Color box size: 33. 6*25. 4*9. 1CM Product weight (bare metal): 42 grams Use time: about 6 7 minutes Charging time: 35 40 minutes Remote control mode: 2. 4G remote control Remote control distance (m): 80 100 meters Packing list: Aircraft*1, remote control*1, manual*1, USB charger*1, fan blade*2, lithium battery*1