Key Features Bluetooth 5.3: Wireless audio for compatible devices. Multiple Playback Modes: Bluetooth, TF card and AUX listening. Seven-Color Lighting: Gradient illuminated cat-ear style. 40 mm Drivers: 400 mAh Battery: Up to 10 hours of music or calls at 80% volume. Comfortable Folding Design: Soft earmuffs, adjustable headband and foldable earcups. Technical Specifications Component Specification HOCO W42 Cat Ears Color Crystal Blue Produ Type Bluetooth Version 5.3 Playback Modes Bluetooth, TF Card, AUX Speaker Driver 40 mm Frequency Response 20 Hz – 20 kHz Battery Capacity 400 mAh Music / Talk Time 10 Hours (80% Volume) Standby Time 180 Hours Charging USB Type-C, DC 5 V; Approximately 2 Hours Wireless Distance 10 m Lighting Gradient Seven-Color Built-In Dimensions 203 × 172 × 75 mm Weight 190 g Compatibility & Important Information Requires a compatible Bluetooth device for wireless playback. TF card mode and AUX mode use their corresponding input methods. Battery runtime depends on volume, playback mode and operating conditions. Cat-ear lighting is a visual feature and does not indicate active noise cancellation. Please to review Q: What Bluetooth version is supported? A: Bluetooth 5.3. Q: Can W42 play music without Bluetooth? A: Yes. TF card and AUX playback are also supported. Q: What is the battery capacity? A: 400 mAh. Q: How long can it play audio? A: Up to 10 hours of music or calls under the manufacturer's 80% volume condition. A: Yes. They feature foldable earcups and an adjustable headband.