Technics EAH-AZ40 True Wireless In-Ear Headphones (Rose Gold) - Manual (Page 15)

Preparation
15
Charging
The rechargeable battery (installed in the unit) is not charged initially. Charge the battery before using the unit.
• Proper charging is not possible if there is dust or droplets of water on the charging terminal and the terminal sections
of the earphones or charging cradle. Remove the dust or water droplets before charging.
Note
• Charge in a room temperature between 10 o C and 35 o C (50 o F and 95 o F).
• While the earphones are in the charging cradle and charging, it is not possible to turn the earphone power on or
connect to Bluetooth ® devices.
When the earphones have not been put into the charging cradle, the charging cradle itself is charged.
a : Power source (ex. PC)
b : USB charging cord (supplied)
1
Use the USB charging cord (supplied) to connect the charging cradle to a 5.0 V power
source (500 mA or higher).
• Charging cradle starts charging:
Battery fully charged: The charging cradle LED lights off.
Battery not charged: The charging cradle LED lights (green, yellow or red).
• Check the direction of the USB charging cord terminals and plug in/out straight holding onto the plug. (It may
result in malfunction by the deforming of the terminal if it is plugged in obliquely or in wrong direction.)
2
Put the earphones into the charging cradle.
• Confirm the L side and R side of the earphones, and match the positions of the charging terminals on the
earphones with the terminal sections in the charging cradle. (Charging of the earphones will not start if the
positions do not match.)
• When the earphones are inserted, the charging cradle LED (cyan) flashes twice. If it is not flashing, the
earphones are not inserted correctly.
Using the USB charging cord (supplied) to charge the earphones and the charging cradle