XY-XMZ Wireless Hearing aid
1 stand Hearing aid +1 root bent tube+3 star ear cap + 1 star battery+ 1 root vernier
NOTE:Each hearing aids at a time using a battery, normal use 8 hours a day, normal midrange volume of each battery can use 15 days or so, the battery life is at peace with the battery brand use time and the volume to order of hearing AIDS