Features and Benefits
JBL Safe Sound
JBL legendary sound designed to never exceed 85dB making them safe for even the youngest
music fans.
Bluetooth enabled
A wireless connection up to 15 meters away means no wires to worry about.
Built-in mic
Help your kids stay connected to the world with the built-in mic. They can chat easily with
friends and family during downtime, or teachers while they’re busy learning.
30-hour battery life
30-hour battery life and quick-recharge with user-friendly USB type C. And for a super quick
top-up, get 2 hours of battery life with 5 minutes charge.
Easy controls
Child-friendly control buttons make it easy and safe for children to operate.
Comfort fit
Soft padded headband and ear cushions for a feathery fit.
Ultra-portable
The compact and foldable design combined to make music highly portable.
Make it yours – JBL Sticker set
Kids can personalize the headphones with the stickers set in the box.
What’s in the box:
1 x JR 310BT headphones
1 x USB charging cable
1 x Sticker set
1x QSG
1 x Warranty card
1 x Warning card

Technical Specifications
Driver size: 32mm/1.25" Dynamic driver
Power supply: 5.0V 1.0A
Weight: 115g/0.254 lbs
Battery type: Lithium-ion Polymer
(400mAH, 3.7V)
Charging time: <2 hrs from empty
Music playtime with BT on: 30 hrs
Frequency Response: 20Hz – 20kHz
Impedance: 32 ohm
Sensitivity: 90dB SPL @ 1kHz/1mW
Maximum SPL: 80dB
Microphone sensitivity:
-40 ± 3dBV @ 1kHz/Pa
Bluetooth version: 5.0
Bluetooth profile version: A2DP V1.3,
AVRCP V1.5, HFP V1.6
Bluetooth transmitter frequency range:
2.4GHz – 2.4835GHz
Bluetooth transmitter power: <4dbm
Bluetooth transmitter modulation:
GFSK, π/4 DQPSK, 8DPSK
Maximum operation temperature: 45 °C