JBL Junior 320BT Wireless headphones

• Driver Size: 32 mm Dynamic Driver.
• Frequency Response: 20 Hz – 20,000 Hz.
• Impedance: 32 ohm.
• Sensitivity: 85 dB SPL @ 1 kHz.
• Maximum SPL: 85 dB (Safe Sound Limit).
• Microphone Sensitivity: -40 dBV/Pa @ 1 kHz.
• Bluetooth Version: 5.3.
• Bluetooth Profiles: HFP v1.8, AVRCP v1.6.2, A2DP v1.4.
• Frequency Range: 2.4 GHz – 2.4835 GHz.
• Modulation: GFSK, π/4-DQPSK, 8DPSK.
• App Support: JBL Headphones App (iOS & Android).
• Battery Type: Lithium-ion battery (3.7 V / 500 mAh).
• Charging Port: USB Type-C.
• Full Charge Time: 2 hours from empty.
• Speed Charge: 5 minutes gives 3 hours of playback.
• Maximum Playtime: Up to 50 hours.
• Power Supply: 5 V, 1 A.
• Weight: 122.2 grams (0.27 lbs).
• Design: On-ear, foldable, cushioned headband.
• Ear Cushion Material: PU Leather.
• Maximum Operating Temp: 45 °C.