JBL Kids Wireless On-Ear Headphones Blue/RedGreen-JR310BT

Description

Power supply: 5.0 V 1.0 A
-Frequency Response: 20 Hz – 20 kHz
-Impedance: 32 ohm
-Sensitivity: 90 dB SPL @ 1kHz / 1mW
-Maximum SPL: 80 dB
-Microphone sensitivity: -40 ± 3 dBV @ 1kHz / Pa
-Maximum operation temperature: 45 °C

Dimensions:
-Driver size: 32 mm / 1.25 ” Dynamic driver
-Weight 115: g / 0.254 lbs

Control and Connection Specifications:
-Bluetooth version: 5.0
-Bluetooth profile version: A2DP V1.3, AVRCP V1.5,HFP V1.6
-Bluetooth transmitter frequency range: 2.4 GHz -2.4835 GHz
-Bluetooth transmitter power: <4 dbm
-Bluetooth transmitter modulation: GFSK, π/4 DQPSK, 8DPSK

Battery:
-Battery type: Lithium-ion Polymer (400 mAH, 3.7 V)
-Charging time: <2 hrs from empty

Music playtime with BT on: 30 hrs