Samsung Chrono SCH-R260 User Manual page 219

Do hands-free kits for wireless phones reduce
risks from exposure to RF emissions?
Since there are no known risks from exposure to RF emissions from
wireless phones, there is no reason to believe that hands-free kits
reduce risks. Hands-free kits can be used with wireless phones for
convenience and comfort. These systems reduce the absorption of RF
energy in the head because the phone, which is the source of the RF
emissions, will not be placed against the head. On the other hand, if
the phone is mounted against the waist or other part of the body
during use, then that part of the body will absorb more RF energy.
Wireless phones marketed in the U.S. are required to meet safety
requirements regardless of whether they are used against the head
or against the body. Either configuration should result in compliance
with the safety limit.
Health and Safety Information 214