Take the sticker off the battery.
Find the battery door and open it.
Put the battery into the battery door. Make sure the + side faces up.
Close the battery to turn ON the device.
Identify the RIGHT (red) and LEFT (blue) device by color coding of the earpiece.
Hold the hearing aid at the tube close to the earpiece.
Insert the earpiece into your ear opening.
Place the device body behind your ear. The earpiece should still be in your ear opening.
If there is a cord to secure your device by the earpiece, tuck it into the bowl of your ear.