|
New!
35IR-USB |
New!
35IR-B |
New!
34B-IR |
CLS721 |
CLS725 |
CLS729 |
CLS747 |
| MSRP |
$63 |
$44 |
$29 |
$52 |
$52 |
$52 |
$52 |
| Reception
Range |
15' line of
sight |
15' line of
sight |
15' line of
sight |
100' |
100' |
100' |
100' |
Frequency |
infrared |
infrared |
infrared |
72.1
mHz |
72.5
mHz |
72.9
mHz |
74.7
mHz |
Color-coded
hardware |
- |
- |
- |
yellow |
blue |
green |
red |
| Individual
volume controls |
yes |
yes |
yes |
on
earcup |
yes |
yes |
yes |
| Rugged ABS plastic earcup
and headband (fully adjustable) |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| Built-in
antenna for audio reception |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| Rechargeable nickel metal
hydride battery |
2 "AAA" |
2 "AAA" |
2 "AAA" |
yes |
yes |
yes |
yes |
| Hours of
operation for a single charge |
- |
- |
- |
6
hours |
6
hours |
6
hours |
6
hours |
| AC adapter |
- |
- |
- |
yes |
yes |
yes |
yes |
| Wireless
transmitter |
- |
- |
- |
CLS721T |
CLS725T |
CLS729T |
CLS747T |
| Warranty for school use |
1 year |
1 year |
1 year |
1 year |
1 year |
1 year |
1 year |
