| |
Individual wireless headphones |
|
CLS721 |
CLS725 |
CLS729 |
CLS747 |
Wireless headphone |
yes |
yes |
yes |
yes |
Frequency |
72.1 mHz |
72.5 mHz |
72.9 mHz |
74.7 mHz |
| Color-coded
hardware |
yellow |
blue |
green |
red |
| Individual volume controls |
on earcup |
yes |
yes |
yes |
Rugged
ABS plastic earcup and
headband (fully adjustable) |
yes |
yes |
yes |
yes |
Built-in antenna for audio
reception |
yes |
yes |
yes |
yes |
Rechargeable
nickel metal
hydride battery |
yes |
yes |
yes |
yes |
Hours of operation for
a
single charge |
6 hours |
6 hours |
6 hours |
6 hours |
| Warranty for school use |
1 year |
1 year |
1 year |
1 year |
