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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
Digital Display Bluetooth 5.3 Audio Receiver Transmitter Support USB /TF Card MP3 Player, C681. Wireless frequency: 2. 4GHz 2. Working time: up to 5 hours 3. Bluetooth compatible version: 5. 3 4. Bluetooth compatible transmission distance: up to 10 meters in an open area without obstacles 5. Working voltage: DC 5V 6. Power supply mode: external power supply 7. Power supply mode: Type C interface 8. Interface type: AUX dual channel U disk TF card 9. Basic functions: Bluetooth compatible reception Bluetooth compatible transmission U disk
1. Wireless frequency: 2.4GHz
2. Working time: up to 5 hours
3. Bluetooth compatible version: 5.3
4. Bluetooth compatible transmission distance: up to 10 meters in an open area without obstacles
5. Working voltage: DC 5V
6. Power supply mode: external power supply
7. Power supply mode: Type-C interface
8. Interface type: AUX/dual channel/U disk/TF card
9. Basic functions: Bluetooth compatible reception/Bluetooth compatible transmission/U disk playback/TF card playback
9. Supported equipment: mobile phones/tablets/computers/TVs/speakers, power amplifiers/projectors/mixers and other devices with audio input/output interfaces
10. The transmission mode is suitable for: Bluetooth compatible speakers, Bluetooth compatible headsets, desktop computers, notebooks, TVs, projectors, set-top boxes
11. The receiving mode is suitable for: various speakers, car radios, power amplifiers, mobile phones, tablet computers
12. Product size: about 67x50x20mm/2.63x1.96x0.78 inches
13. Product net weight/gross weight: 38g/118g
14. Receiving + transmitting in one: TX transmitting mode, computer/TV upgrade Bluetooth compatible, easy to connect Bluetooth compatible earphones/speakers, solve the problem that TV cannot connect Bluetooth compatible earphones; RX receiving mode, easy to connect mobile phones/tablets, old speakers/ The Bluetooth compatible function of the power amplifier can be connected to the audio interface of the old speaker or power amplifier to solve the problem of incompatibility with Bluetooth and the inability to use Bluetooth compatible playback
15. Multi-function knob: support power on/off, play/pause, answer calls, end calls, reject calls, re-search, increase and decrease volume, CD-level high-definition lossless playback, HIFI high-definition decoding output, restore sound details, just like live music scene
16. Rich interfaces: meet the needs of different devices for AUX/dual-channel RCA/U disk/TF card, meet the needs of different devices and different audio interfaces, compatible with various brands of U disk TF cards, plug and play, no driver, stereo Sound quality, no transmission delay
17. Equipped with high-performance Bluetooth compatible 5.3 chip, low data transmission loss, fast response, strong anti-interference ability, bid farewell to delay, congestion and other problems, built-in signal gain amplifier, no dead angle in room connection, no delay in 10m transmission sound quality, stable signal without interference
18. Bottom design, non-slip silicone pad to prevent slipping
Connection operation:
- Step 1: Connect the product with the device through the input/output interface, and select the sending mode (TX) or receiving mode (RX) as required
- Step 2:
When using RX mode: turn on the Bluetooth compatibility of the mobile phone, search for "C68", and click to connect;
When using the transmission mode (TX): turn on the Bluetooth compatible headset/speaker and enter the waiting state. This product will automatically search for nearby devices and connect. The screen will stop flashing after the connection is successful
-Step 3: After successful pairing, you can enjoy the music journey
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
4.2 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Trusted company
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
Great product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Great for recovery
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
Really helps with post work out recovery. I feel noticeably less sore when I take this after a workout. Definitely prefer the lemon flavor over the berry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 3
Great formula, but desperate for an unflavored option
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
I’ve been incorporating Thorne’s Amino Complex into my daily stack, and from a nutritional standpoint, it’s hard to beat. The clinical dosing of essential amino acids is exactly what I’m looking for to support my recovery and fitness goals. Thorne is usually my go-to for purity and quality, and this product is no exception when it comes to the actual ingredients.
However, the flavor profile is a significant drawback. To be blunt: the flavors are just not good. They feel chemically and overly sweet, which makes it a chore to drink rather than a supplement I look forward to.
I would much prefer an unflavored and unsweetened version. Having the option to just mix the raw powders into water or my own beverage without the unnecessary flavorings and sweeteners would be a game-changer. If you’re sensitive to artificial tastes or just prefer a "cleaner" experience, the current options might be a struggle.
Pros:
High-quality amino acid profile.
Trusted brand with great sourcing.
Cons:
Flavors are unpleasant and too sweet.
No "naked" or unflavored option available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
★★★★★ 5
Taste and Quality are Excellent!
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
Thorne has a reputation for high quality products so I thought I’d try this whey protein. It tastes really good! I find it easy to digest, and it dissolves easily. I plan to make this my go-to whey protein.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Definitely sweet but good mixed
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
The vanilla would be too sweet on it's own for me but with strawberries and spinach it's perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2025
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