Reliable Audio for K–12 Classrooms, Testing, and Everyday Learning
 
The B3E 857-C-BLK USB-C Headphone is a lightweight, dependable audio solution designed for today’s K–12 learning environments. Built for classroom use, online learning, digital testing, and multimedia activities, this headset delivers clear, balanced sound in a simple plug-and-play design.
 
With a modern USB-C connection, the 857-C-BLK works easily with many current Chromebooks, laptops, tablets, and other USB-C enabled devices. The soft sponge ear cushions and lightweight frame help keep students comfortable during extended use, while the durable construction is made to handle daily classroom demands.
 
Specifications
Part Number: 857-C-BLK
Product Type: USB-C Headset
Color: Black
Connector: USB-C
Diameter: Ø30 mm
Impedance: 32Ω
Sensitivity: 100 dB ± 3 dB
Frequency Response: 20–20 KHz
Cord Length: 1.2 m
Cord Material: PVC
Ear Cushions: Sponge