The super fine Green Lion Osaka True Wireless Earbuds deliver high-quality sound as they bring cutting-edge technology. Its form is made of durable PC material, while the earbuds use Bluetooth V5.4 for a safe connection with a transmission distance of 10m. The 10mm speaker proffers sound of terrific quality at 32? impedance, maintaining sound clarity across a broad frequency range of 20Hz-20KHz. The noise cancellation feature makes it IPX4-rated, meaning you can use it for the outdoors and call-in noises. It supports 6.5 hours of playtime with one charge and features fast Type-C charging. Other functionalities include dual mic ENC, which enables better clarity of calls, voice assistant mode, and touch controls for better experiences. Specification Material: PC Case Battery: 400mAh Bluetooth Version: V5.4 Transmission Range: 10m Speaker: 10mm Frequency: 20Hz-20KHz Impedance: 32?±15% Sensitivity: 108±1.5 dB Noise Reduction: 35±3 dB Waterproof: IPX4 Charging Port: Type-C Charging Time: 2 Hrs Playtime: 4-6.5 Hrs Standby Time: 35 Hrs SKU: GNOSKTWSGY | GNOSKTWSWH GTIN: 0990478119093 | 0990478119109 Features Dual Mic ENC Voice Assistant Mode Type-C Charging Touch Control 6.5 HRS Playtime