**Product Specifications:**
**Brand:** KOVOL
**Model:** T09
**Product Type:** OWS Bluetooth Earphones
**Color:** Black
**Wearing Style:** Open-ear
**Bluetooth Chip:** Zhongke Lantu AB5656C3
**Bluetooth Version:** Bluetooth V5.4
**Battery Life:** Single ear (approx. 5 hours)
**Earphone Battery Specification:** 40mAh/3.7V
**Charging Case Battery Specification:** 250mAh/3.7V
**Bluetooth Transmission Radius:** >=10 meters in open space without obstacles
**Key Features:**
Comfortable to wear with cloud-like comfort
360° surround sound with heavy bass effect
Directional sound transmission technology to prevent sound leakage
AI intelligent noise reduction for clear calls
Stable and secure fit with arc design
Bluetooth 5.4 for stable and anti-interference connection
Long-lasting battery life of up to 36 hours
Immersive sound experience with 13mm dynamic drivers
Low latency for gaming and stereo sound effects
Wide compatibility with iOS, Android, Windows, and HarmonyOS devices
Open-ear design for breathable and sweat-resistant wear
Comes with a lanyard for easy carrying
**FAQs:**
**Q:** Why is there sound only in one earphone?
**A:** Turn off Bluetooth on your phone, forget the device, place the earphones in the charging case, let them power off, and reconnect after 3-5 minutes.
**Q:** How to connect the earphones to the phone?
**A:** Delete the paired Bluetooth name on your phone and reconnect.
**Q:** Why is there no sound during music/calls?
**A:** Adjust the audio settings on your phone or check the battery level of the earphones.
**Q:** How to deal with electrical noise/static?
**A:** Ensure the earphones are charged properly and avoid using high-power chargers.
*Disclaimer: Product specifications are based on KOVOL's laboratory tests and may vary in different usage environments.*