[Stylish and Innovative Design] Featuring a modern aesthetic, these Bluetooth 5.4 in-ear headphones showcase a unique embossed craftsmanship with a tactile finish. The eye-catching design makes them a trendy accessory for any outfit [Ergonomic Semi-In-Ear Fit] Designed with comfort in mind, these headphones utilize a semi-in-ear style that conforms to the shape of your ears. Enjoy extended listening sessions without discomfort, making them perfect for daily use [Long Battery Life] Powered by high-quality chips, these headphones offer an impressive playback time of 4 to 6 hours on a single charge. Stay connected and entertained throughout your day without the need for constant recharging [Smart Call Noise Reduction] No matter where you are, experience crystal-clear conversations with intelligent noise reduction technology. These headphones ensure that your voice is heard clearly, even in noisy environments [Effortless Connectivity] Simply pick up the headphones to power them on and enjoy quick pairing with your devices. Experience a hassle-free setup that lets you dive straight into your favorite music or calls without delay Specifications: Chip: JL6983D2 Bluetooth version: V5.4 Supported protocols: A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, SPP v1.2 Transmitting power: Class 2 Working frequency band: 2.4GISM band (2.402-2.480GHZ) Transmission distance: about 15 meters Standby time: about 130 hours Charging time: about 1 hour Talk/music time: about 4.5 hours Talk current: about 6.5mA (mobile phone 10 volume) Music current: about 4.5mA (mobile phone 10 levels of volume) Charging current: 200mA Rated voltage/current: 5V/30mA Speaker diameter: 13mm Speaker ohm: 32+15% Speaker sensitivity: 118+3dB Signal-to-noise ratio: 59dB Battery: 28mAh for earphones, 180mAh for charging case