Model: 450BT-B

Audio input: 3.5mm jack type

Speaker horn: 40mm steel magnet

Sensitivity: 115±3dB

Withstand power: 25mW

Frequency range: 20-20KHz

Impedance: 24Ω

Microphone: support

Frequency range: 30Hz-16KHz

Sensitivity: -58±3dB

Bluetooth version: V5.0

Transmission protocol: EDR+A2DP

Transmission coding: SBC

Noise reduction technology: DSP+AEC

Frequency range: 2.402~2.480GHz

Effective transmission distance: 10 meters

Transmit power: 5dBm

Battery capacity: lithium battery 200mHA

Charging current: 5V 500mA

Charging time: <1 hour

Use time: ≥5 hours

Standby time: ≥1000 hours

MicroSD/TF card: support up to 32G, support play/pause/previous/next

FM listening: Support FM full frequency search and save frequency

Head bow: PP

External film: ABS (logo can be customized)

Arm: ABS

Bowl: ABS

Gold sheet: aluminum sheet (logo can be customized)

Button: ABS

Earmuffs: leather

Packing list: headset host, instruction manual, blister, packing box, Micro USB charging cable, 3.5mm audio computer cable.