Introduction to Radio-Wave Exposure and SAR
This mobile phone model, XQ-ES54/XQ-ES72, has been designed to comply with applicable safety requirements for exposure to radio waves. These requirements are based on scientific guidelines that include safety margins to assure the safety of all persons, regardless of age or health.
Understanding Specific Absorption Rate (SAR)
The radio-wave exposure guidelines employ a unit of measurement known as the Specific Absorption Rate, or SAR. SAR quantifies the rate at which radiofrequency energy is absorbed by the human body.
Tests for SAR are conducted using standardized methods, with the phone transmitting at its highest certified power level in all used frequency bands. While SAR levels may differ between phone models, all are designed to meet relevant exposure guidelines.
International Safety Guidelines and Limits
For residents in countries that have adopted the SAR limit recommended by the International Commission on Non-Ionizing Radiation Protection (ICNIRP), the limit is 2 W/kg averaged over ten (10) grams of tissue. This limit is followed in regions such as the European Union, Japan, Brazil, and New Zealand.
Body-Worn Operation and Testing
For body-worn operation, this phone has been tested and meets RF exposure guidelines when used with an accessory that contains no metal and positions the handset a minimum of 5 mm from the body. Use of other accessories may not ensure compliance with RF exposure guidelines.
The highest SAR value for this model when tested by Sony for use at the ear was 1.32 W/kg (10 g).
When the phone is worn on the body, the highest tested SAR value was 1.12 W/kg (10 g).
United States Specific Information
For body-worn operation in the United States, the phone was tested when positioned a minimum of 10 mm from the body, without any metal parts in the vicinity of the phone or when properly used with an appropriate accessory.
For devices that include “Wi-Fi® hotspot” functionality, SAR measurements were taken using a separation distance of 10 mm. Use of third-party accessories may result in different SAR levels than those reported.
