1. ANC active noise cancellation technology, millisecond-level response, precise cancellation, -52dB deep noise reduction 2. Dual-microphone ENC intelligent noise cancellation ensures clear calls even in airports, high-speed trains, and windy environments 3. 10mm dynamic driver unit, equipped with advanced audio processing technology, delivers powerful bass and immersive sound effects 4. 360-degree spatial sound for immersive gaming and streaming 5. V5.4 Bluetooth, highly sensitive and fast connection, low latency and interference resistance, stable and uninterrupted connection 6. More scientific and smooth cavity structure, fits snugly in the ear canal, ensuring long-lasting comfort and peace of mind 7. Smart dual connection, supports dual-device switching 8. IPX4 water and sweat resistance for greater freedom of movement 9. Sliding cover design for convenient operation Product Specifications Material: ABS+PC Battery Capacity: 3.7V 40mAh (left), 3.7V 40mAh (right), 3.7V 300mAh (charging case) Input Power: 5V 500mA Output Power: 5V 40mA Battery Life: Music Time: about 7 hours (70% volume), Talk Time: about 3 hours (70% volume) Charging Time: Earphones: 70 minutes, Charging Case: 110 minutes Audio Codecs: SBC, AAC Active Noise Cancellation: Supported Ambient Noise Cancellation: Supported Waterproof Rating: IPX4 Wireless Version: V5.4 Dimensions: 20x22x32mm (earphone), 65x59x30mm (charging case) Total Weight: 63.5g (each earphone: 3.8g, charging case: 55.9g)