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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
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For Your Every Summer RSVP, with Code: SUMMER15
Description
HXSJ Air-S4 Bluetooth 5.1 True Wireless HiFi Stereo Earphones with Charging Case1. Bluetooth version: V5. 1+EDR 2. Bluetooth protocol: A2DP1. 3 HFP1. 6 HSP1. 2 3. Chipset: Bluetrum 5376 4. Shell material: ABS+PC 5. Charging time: 1 hour 6. Bluetooth distance: 10m 15m 7. Earphone battery capacity: 30mAh*2 8. Standby time: 240Hours 9. Play Calling Time: 2 2. 5 Hours 10. Charging box battery capacity: 200mAh 11. Speaker model: 13. Round horn 12. speaker size: 13mm 13. Impedance: 320 14. Rated power: 3mW 15. Maximum power: 5mW 16.
1. Bluetooth version: V5.1+EDR2. Bluetooth protocol: A2DP1.3/HFP1.6/HSP1.2
3. Chipset:Bluetrum 5376
4. Shell material: ABS+PC
5. Charging time: 1 hour
6. Bluetooth distance: 10m-15m
7. Earphone battery capacity: 30mAh*2
8. Standby time: 240Hours
9. Play/Calling Time: 2-2.5 Hours
10. Charging box battery capacity:200mAh
11. Speaker model: φ 13. Round horn
12. speaker size: φ 13mm
13. Impedance: 320 Ω
14. Rated power: 3mW
15. Maximum power: 5mW
16. Frequency response:20hz- 20Khz
17. Charging time of charging box:1.5-2 Hours
18. The mumber of times the charging box charges the headset: 3 times
19. The blue lights of main and auxiliary /TWS connection success indication: engines flash slowly at intervals
20. Single headphone weight：7g
21. Single headphone size：3.1*1.6*1.6cm
22. Charging box weight：19g
23. Charging box size: 4.4*4.3*2.1cm
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
2015 Civic
Size fits properly on a 2015 Honda Civic SI sedan. Price could be a little cheaper for a non-OEM part.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Excellent fit and great quality”
This filter fit perfectly and was very easy to install. The quality feels solid, and it made an immediate difference in air flow. It’s a reliable replacement at a much better price than the dealer. I’ll definitely be buying this brand again for future changes.
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Reviewed in the United States on August 17, 2025
★★★★★ 5
Super deal
This was a great replacement and much cheaper than most.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Nice replacement filter
Fits perfectly
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Good filter
Pretty thick. May restrict airflow a little bit but it's a good filter.
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Reviewed in the United States on November 2, 2024