1, Bluetooth 5.4 Blue trum AB5712C;-2. Battery capacity: 800mAh; Charging time: 2 hours-3. Use time: 90 hours (45 hours on ANC); Standby time: 200 hours-4. Material: ABS；Size: 20417482mm; Weight: 270g-5. Support Bluetooth, TF card, AUX mode-6. Support ANC noise reduction-7. Support Chinese and English prompt sounds: double click the M button when not paired