I have confirmed that sound can be heard from both ears. The transparent ear hook design with lights improves visibility and safety during nighttime runs, allowing you to jog, walk, and engage in other outdoor activities in the dark. When listening to music, the battery can last for 15 hours. The Bluetooth headset is light and comfortable, with a single charge lasting about 2 hours and a standby time of 60 days. The charging case can charge the headset 3-4 times, so you don't have to worry about running out of battery. Bluetooth 5.3 chip, smooth transmission and more stable connection. The transmission distance is less than 10 meters (without obstacles), allowing you to comfortably enjoy music while doing housework or exercising. The soft ear pads wrap around the ears, are gentle on the ears, and can be worn on the ears instead of in them, without causing pain. They isolate external noise and reduce sound leakage. These Bluetooth sports earphones are worn on the ears, so they won't fall off no matter how much you run, and they stay securely in place. IPX5 is sweat-resistant and waterproof. Brand: ZOUKAI Model Name: BT-X Color: Black Headphone Type: Ear-hook type Connection Technology: Wireless Size: Height 2.5, Width 6, Depth 8 I received this as a gift. I have many other items for sale too ☺︎ ▶▷▶ #rin’s shop Other earphones ▶▷▶#rin’s smartphone shop ----------------------------- ✔ Immediate purchase without comment is welcome✩*⋆ ✔ Midnight/early morning silent purchase OK! ✔ Bundle discounts, repeat customer discounts, and follow discounts are available, so feel free to comment♡ ̖́- ✔ All items are free shipping◎ Since this is a personal inspection, there may be errors in the description. The actual images are correct (*ᵕ ᵕ)⁾⁾ ----------------------------- 37 Ear-hook earphones bluetooth clip headphones wireless bluetooth earphones Ear-hook type Dual microphone ENC noise reduction Bluetooth 5.3 Dual-ear foldable lightweight sports bluetooth headset earphones earphone wireless black black 92404200