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Description
Measy AU688-U 20 Channels Wireless Guitar System Rechargeable Musical Instrument Transmitter Receiver, AU688-U Black1. 100 meters transmission distance (330FT) 2. Built in lithium battery, charge once, battery life 5 6 hours 3. Strong anti interference, can penetrate walls 4. Built in damping shaft, 270 degree rotation to adjust orientation 5. Plug and play, lossless sound quality 6. Working channel: Channel 20 7. Receiving sensitivity: 90dBm 8. Frequency response range: 20 20000Hz 9. Frequency range: U frequency 10. Delay time: less than 0. 5ms 11. Sampling rate:
1. 100 meters transmission distance (330FT)2. Built-in lithium battery, charge once, battery life 5-6 hours
3. Strong anti-interference, can penetrate walls
4. Built-in damping shaft, 270 degree rotation to adjust orientation
5. Plug and play, lossless sound quality
6. Working channel: Channel 20
7. Receiving sensitivity: -90dBm
8. Frequency response range: 20-20000Hz
9. Frequency range: U frequency
10. Delay time: less than 0.5ms
11. Sampling rate: 64KHz, 16bit
12. Signal to noise ratio: 95dB
13. Distortion: 0.3%@1KHz
14. Dynamic range: 90dB
15. Size: 11.66x3.66x1.63cm
Specification:
| Package Weight |
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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
4.6 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Good quality, Best for schools and shops.
Size: 0.16 x 1.42 ,0.24 x 1.77 ,0.35 x 2.36 Inch
I bought this butyl repair patch and the quality is good. I brought it to the school where I’m learning automotive repair and used it as a teaching consumable. Many students tried it, and everyone thought it worked very well. One thing I would suggest for individual buyers: pay attention to the size combinations in the package. For most car owners, you may end up using only one size more often. Because of that, this mixed-size packaging is probably more suitable for schools, training programs, or auto repair shops where different sizes are needed regularly. Overall, it’s still a good quality product and performs exactly as expected.
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Reviewed in the United States on March 15, 2026
★★★★★ 4
Look very useful
Size: 0.16 x 1.42 ,0.24 x 1.77 ,0.35 x 2.36 Inch
Haven't actually used them yet, but they look like the perfect way to fix a flat. As can be seen they come in various sizes depending on what you will need. All you need to get is some tire patch rubber cement and a good inner tire sealer (I picked up a can of Xtra Seal)
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Reviewed in the United States on March 1, 2024
★★★★★ 5
Saved me from buying a tire
Size: 0.16 x 1.42 ,0.24 x 1.77 ,0.35 x 2.36 Inch, Size: 0.16 x 1.42 ,0.24 x 1.77 ,0.35 x 2.36 Inch
Took our ancient van on a trip to Florida (from IL) and wouldn't you know we picked up some debris in construction. I was able to plug it however the next morning it was flat again. This time I used 2 plugs to and we were able to get home on that. Realizing this wasn't what I wanted my wife driving around and I didn't wanna buy tires for a van with 250k on it I set out to find some internal patches. I pulled the tire off using a harbor freight bead breaker and some motion pro spoons, used vulcanizing Compound and a dremel and patched it right up. Once the tire is off its a really easy process and I just marked my tire and rim to keep the balance close when it went back together. All appears to be working perfectly with no leaks over the past few weeks. This cost way less than a new tire and now I have more for other holes in the future
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Reviewed in the United States on August 2, 2024
★★★★★ 5
Better than just a patch
Size: 0.16 x 1.42 ,0.24 x 1.77 ,0.35 x 2.36 Inch
Do what they are suppose to do, easy to use
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Reviewed in the United States on June 2, 2026
★★★★★ 5
worked great for Me
Size: 0.16 x 1.42 ,0.24 x 1.77 ,0.35 x 2.36 Inch
I have only used two patches so far, and they have worked just fine, You do have to have some tools like a buffing wheel and the vulcanizing glue and a roller wheel to make these patches work as they should, but I am happy with these patches, especially since nobody will repair a motorcycle tire, so this is Your only way to fix them.
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Reviewed in the United States on September 24, 2025
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