Specifications:

Bluetooth Version: Bluetooth 5.1 Bluetooth Profiles: HFP 1.7 A2DP 1.3.1 AVRCP 1.6 Wireless range: Up to 33ft/10 m Listen time: Up to 6.5 hours Talk time: Up to 4 hours Charging case battery: Up to 13 hours Speaker driver size: 5.8 mm Harmonic distortion: <3% Frequency response: 20-20 000 Hz Sensitivity: 94 dB SPL Impedance: 16 ohms|:Moisture protection: IP54 – sweat and water-resistant Microphones: Four-mic noise-canceling DSP WindSmart technology: Protection against wind noise through an adaptive proprietary algorithm Weight: 5.8g (each earbud) 38.6g (charging case without earbuds) Battery type: Rechargeable non-replaceable lithium-ion polymer Charge time: 2 hours for a full charge of earbuds (earbuds battery fully depleted) 3 hours for a full charge of earbuds + case (earbuds + cc battery fully depleted) Quick charge: Up to 1 hour of listening with a 10-minute quick charge Charge connector: Micro USB connectionVoice alerts: Yes Languages (voice prompts): 17 languages: US English UK English Thai Swedish Russian Norwegian Mandarin Spanish Korean Japanese Italian Indonesian German French Danish Cantonese Brazilian Portuguese Applications: BackBeat app on iOS and Android Battery capacity: 60 mAh (earbuds) 440 mAh (charging case) Operating and storage temperature: 32°F – 104°F/0 – 40°C|