Specs:

1. Brand Name: Lenovo
2. Style: Headphones
3. Vocalism principle: dynamic
4. Origin: Mainland China
5. Material: plastic
6. Chemical of High Concern: None
7. Communication: Wireless+Wired
8. Volume control: Yes
9. Category: Headphones and Earphones Headphones
10. Certification: CE
11. Number of drivers: 2
12. Plug Type: None
13. Impedance range: up to 32 Ω
14. Headphone pad material: other
15. Active noise cancellation: Yes
16. Sound insulation: YES
17. Compatible memory card: No
18. Water resistant: Yes
19. Frequency response range: 20 - 20000
20. Magnet type: other
21. Built-in voice assistant: no
22. Wireless Type: Bluetooth
23. Package List: User Manual
24. Package list: Charging cable
25. Control button: Yes
26. Conductor diameter: 40
27. Resistance: 32
28. Sensitivity: 96
29. Is it wireless: Yes
30. Connectors: Type C
31. Headphone type: sealed
32. Bluetooth version: other
33. Battery life up to [hours]: 30
34. Total harmonic distortion: 1
35. Charging method: cable
36. Maximum output: 10
37. SUPPORT APPLICATION: No
38. Function: for video games
39. Function: common headphones
40. Function: For mobile phone
41. Function: HiFi headphones
42. Battery capacity [mAh]: 400
43. Maximum wireless range [m]: <10 m
44. With microphone: Yes
45. Features: With microphone
46. Features: Active noise cancellation
47. Brand Name: Lenovo
48. Model Number: TH54
49. Product Type: Bluetooth Headband Headphones
50. Bluetooth transmission distance: 10 meters
51. Frequency response: 20Hz-20KHz
52. Charging time: 2 hours
53. Music time: Approx. 20 hours-50% volume
54. Speaker size: 40 mm
55. Bluetooth version: 5.4
56. Built-in battery: 300 mAh