JBL Endurance Run waterproof sports in-ear headphones, red wire earphones

Specifications:
-Driver size: 8mm
-Sensitivity: 102dB SPL@1kHz/1mW
-Dynamic frequency response: 20Hz–20kHz
-Maximum SPL: 15mW
-Impedance: 16 ohm
-Bluetooth version: V4.1
-Bluetooth transmission power: 0-4dBm
-Bluetooth transmission modulation: GFSK, π/4 DQPSK, 8DPSK
-Bluetooth frequency: 2.402GHz–2.48GHz
-Bluetooth profiles: A2DP V1.2; AVRCP V1.5; HFP V1.5; HSP V1.2
-Battery type: Lithium Polymer Battery (3.7V 120mAh)
-Power supply: 5V 500mA
-Charging time: 2 hours
- Conversation time with BT active: Up to 6 hours
-Playback time with BT active: Up to 6 hours
-Weight: 19.7g

Package contents:
-1 x ENDURANCE RUNBT
-3 sizes of earplugs
-1 headset adapter
-1 charging cable
-1 warranty/warning leaflet (G/!)
-1 quick start guide/safety sheet (S/i)
-Code:ENDURANCE-RUN