Active noise-cancellation: no
control button: yes
communication: true wireless
volume control: yes
number of drivers: 2
plug type: line type
impedance range: up to 32 ω
model number: a3991
headphone pads material: silicone
support memory card: no
waterproof: yes
frequency response range: 20 - 20000hz
wireless type: bluetooth
package list: user manual,charging cable
resistance: 16ω
sensitivity: 95db
is wireless: yes
connectors: type c
earcups type: sealed
bluetooth version: other
total harmonic distortion: 3%
charging method: charging case
support app: yes
function: common headphone
with microphone: yes
features: waterproof
color: black