A durable and stretchable cord, Include an earphone jack at the bottom of the microphone covered with waterproof flap, The casing is made of high impact plastic with water resistant design for rugged use. 

Technicaldata:

Speaker:

Dimension: 36mm

Impedance: 8 ohms ± 15%

Maximum power: 50mW

Sound pressure level: 120 ± 2dB

Frequency: 420Hz to 20KHz

Microphone:

Dimensions: 9.6mm

Sensitivity: -50 ± 2dB

Operating voltage: 1 to 10V

Impedance: 2.2kΩ

Wire:

Dimension Main wire: Ф4.2mm

Durable temperature: -30ºC~130ºC

Material: PVC