Califone 2985PG Sound Alert HeadphonesCalifone
The Sound AlertTM headphone visibly signals to students and teachers when the headphone volume is louder than the American Speech-Language-Hearing Association recommended 85dB level.
When the volume that is played through this Califone headphone exceeds 85 decibels, a bright red warning light on the earcup turns on, alerting both the teacher and student about an unsafe sound level requiring adjustment.
Having an appropriate headphone volume level pointed out will help teachers and students learn safe and lifelong listening practices, beginning in the classroom, learning center, or school library.
LED lights: Red will turn on whenever the audio level exceeds 85dB SPL +/- 3dB
Orange indicates the battery is recharging and turns green when fully recharged
Green - the system is on & functioning
- Size 40mm diameter (1.6 inches)
- Diaphragm Mylar
- Magnet Ferrite
- Impedance 600 Ohms each side
- Frequency Response 40 H - 18 kHz
- Sound Pressure Level 102 db +/- 3 dB
- Power Capacity 20 milliwatts RMS, 150 milliwatts peak
- Distortion < 5%
- Volume Control Continuously variable
- Cord Permanently attached 6' coiled cord
- Plug: Nickel plated 3.5mm with detachable 1/4" adapter, right angle with to diminish accidental pull out
- Headband & Ear Pad PVC (Washable)
- Headphone Cup Noise-reducing, ABS plastic for durability
- Battery: Li-Ion
- Single charge usage under continuous operation: approx. 36 hours
- Idle operation time Approximately 500 hours
- Charging time 4 hours
- Weight 10 oz., shipping weight 1 lb.
Warranty: 2 year for school, business, church and
Part number: 2985PG
- Classroom Headphones:
- Classroom Headphones
- Ear Pad Type:
- Over Ear Headphones
- Plug Type:
- 3.5 mm Stereo