Model name: JBL TUNE 525BT

Specifications:

• Power supply: 5 V, 1 A
• Frequency response: 20 Hz – 20 kHz
• Impedance: 30 ohm
• Sensitivity: 102 dB SPL @ 1kHz 1mW
• Maximum SPL: 95 dB
• Microphone sensitivity: -2 dBV @ 1kHz/Pa
• Maximum operation temperature: 45 °C
• Bluetooth transmitter modulation: GFSK, π/4-DQPSK, 8-DPSK
• Bluetooth version: 5.3
• Bluetooth profile version: HFP 1.7.2, AVRCP 1.6.2, A2DP 1.3.2
• Bluetooth transmitter frequency range: 2.4 GHz – 2.4835 GHz
• Bluetooth transmitted power: 6 dB (E.I.R.P)
• Driver Size: 33 mm / 1.3" Dynamic driver
• Headphone Cable Length: 1.2 m / 3.937 ft
• Headset battery type: Lithium-ion battery (3.7V / 450 mAh)
• Charging time: 2 hrs
• Music playtime with BT on: up to 57 hrs