New, unopened. Please note that the surrounding cardboard will be removed for shipping (see photo 3). Purchased in late March. Wireless earphones with an open-ear design for comfortable wear and up to 16 hours of battery life. - Model Name: oladance OWS 2 - Bluetooth Version: Bluetooth 5.2 - Waterproof Rating: IPX4 - Weight: Approximately 8g - Battery Life: Up to 16 hours - Charging Case: Included Brand: Oladance Color: Blue Headphone Type: Ear-hook Model Name: OLA026 Connectivity Technology: Wireless Wireless Communication Technology: Bluetooth [Open-Ear Earphone Design] Oladance fully wireless earphones feature an open-ear design that gently and securely fits the ear. Compared to Bluetooth in-ear or bone conduction earphones, these wireless earphones do not block the ear, providing a comfortable sense of openness and a natural, powerful sound. [360° Sound Experience, High Sound Quality] Equipped with a 16.5mm composite bio-dynamic driver, three times the size of ordinary wireless earphones. The diaphragm is softer and has a larger amplitude, achieving a sound closer to natural. Oladance open-ear Bluetooth earphones allow you to enjoy deep, realistic bass anytime, as if you were listening in a concert hall. The "Dynamic EQ Algorithm" automatically compensates for frequency bands lost depending on the wearing scene, richly reproducing the original sound. [Unique Design to Minimize Sound Leakage] [Stress-Free Multi-Point Connection] Bluetooth 5.3 enables smoother connections and multi-point connections, allowing simultaneous connection to two devices. You can connect to two devices simultaneously, such as a smartphone and a tablet, or a PC and a laptop, without having to switch Bluetooth connections each time. You can play music on your smartphone and have an online meeting on your computer. Firmware Update: You can upgrade the product's firmware to 0.4.8.1 in the Oladance APP. After the update, several issues, such as Bluetooth connection and white noise on one side, can be fixed, improving the overall user experience. Thank you for viewing.