Huawei M660 Quick Start - Manual (Page 17)

16
Operating Environment
• Do not use or charge the device in dusty, damp, and dirty places
or places with magnetic fields. Otherwise, it may result in a
malfunction of the circuit.
• The device complies with the RF specifications when the device
is used near your ear or at a distance of 0.59 inch (1.5 cm) from
your body. Ensure that the device accessories such as a device
case and a device holster are not composed of metal
components. Keep your device 0.59 inch (1.5 cm) away from
your body to meet the requirement earlier mentioned.
• On a stormy day with thunder, do not use your device when it is
being charged, to prevent any danger caused by lightning.
• When you are on a call, do not touch the antenna. Touching the
antenna affects the call quality and results in increase in power
consumption. As a result, the talk time and the standby time are
reduced.
• While using the device, observe the local laws and regulations,
and respect others' privacy and legal rights.
• Keep the ambient temperature between 32°F (0 °C) and 113°F
(45 °C) while the device is being charged. Keep the ambient
temperature between 14°F (-10 °C) to 131°F (55 °C) for using
the device powered by a battery.
Prevention of Hearing Damage
Using a headset at high volume can damage your hearing. To
reduce the risk of damage to hearing, lower the headset volume to a
safe and comfortable level.
Safety of Children
Comply with all precautions with regard to children's safety. Letting
the child play with your device or its accessories, which may include
parts that can be detached from the device, may be dangerous, as it
may present a choking hazard. Ensure that small children are kept
away from the device and accessories.