Best in 7 days
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- USA
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Ships within 48 hours · Estimated delivery Jul 2 - Jul 7
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
ZK-MT21 50W x 2+100W 2.1 Channel Bluetooth Digital Amplifier Module1. Bluetooth version: 5. 0 (unobstructed, 15 meters) 2. Input sensitivity: 500mV 3. Input mode: AUX+Bluetooth 4. Number of power channels: 2. 1 channels 5. Adaptable speaker: 20 100W, 4 8 ohms 6. Protection mechanism: anti reverse connection, overheating and overcurrent, short circuit protection. 7. Adaptable power supply: DC 12 24V 5A or above (cannot be connected to 24V battery pack). 8. Output power: less than 50W for left and right channel, less
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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 531 reviews
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Product Reviews
★★★★★ 5
Perfect hat to buy
Size: One Size, Color: (001) Black / Black / Reflective
Perfect fit. Will buy again.
Easily washable. Color doesn’t fade after washing. Perfect for sun protection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 5, 2025
★★★★★ 3
great
Size: One Size, Color: (001) Black / Black / Reflective
Like it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
Quality
Size: One Size, Color: (600) Bittersweet Pink / / Posh Pink
Excelent
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
★★★★★ 5
Would buy again
Size: One Size, Color: (001) Black / / White
I have a smaller head circumference and it fits great. Also, The brim isn’t too big .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Bice
Size: One Size, Color: (536) Purple Crest / / Purple Crest
I thought that the color was really pretty! And, underarmour stuff,while a bit overpriced, is usually pretty comfy.
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Reviewed in the United States on May 7, 2026
