RT37D

Earbuds Battery: 40mAh

Charging case battery: 500mAh

Speaker diameter: Ø10mm

Speaker output power: 3mW 32ohm

Speaker Frequency Response: 20Hz-20kHz

Input (station): 5V/400mA

Stand by time: 180 days

Charging time (earbuds): 1.5H

Charing time (station): 2H

Playing music time: 7.5H

Reach up to: 10 meters

Weight( charging case and earbuds): 32.5g