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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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Description
JOYROOM JHead Series JR-JH3 Hybrid Active Noise Reduction Bluetooth Earphone, JR-JH31. Material: ABS+PC 2. Bluetooth Version: V6. 0 3. Frequency Response: 20Hz 20kHz 4. Supported Protocols: HSP, HFP, A2DP, AVRCP 5. Audio Decoding Formats: AAC, SBC 6. Transmission Distance: 10m 7. Waterproof Rating: IP54 8. Music Playback Time: Approx. 37 hours (with active noise cancellation on), Approx. 55 hours (with active noise cancellation off) 9. Battery Capacity: 500mAh 10. Charging Time: Approx. 1. 5 hours 11. Charging Input: 5V 1A 12.
1. Material: ABS+PC2. Bluetooth Version: V6.0
3. Frequency Response: 20Hz-20kHz
4. Supported Protocols: HSP, HFP, A2DP, AVRCP
5. Audio Decoding Formats: AAC, SBC
6. Transmission Distance: 10m
7. Waterproof Rating: IP54
8. Music Playback Time: Approx. 37 hours (with active noise cancellation on), Approx. 55 hours (with active noise cancellation off)
9. Battery Capacity: 500mAh
10. Charging Time: Approx. 1.5 hours
11. Charging Input: 5V/1A
12. Charging Interface: Type-C
13. Driver Unit Size: 40mm
14. Maximum Output Power: 30mW
15. Maximum Noise Cancellation Depth up to -45dB (average 35dB), achieving deep-sea-like tranquility
16. Equipped with 5-microphone AI The ENC algorithm not only ensures you hear your voice clearly, but also delivers clarity akin to face-to-face conversation.
17. Utilizes a 40mm composite diaphragm paired with a 12mm ultra-large voice coil, bringing powerful bass and crystal-clear vocals.
18. Made with soft protein leather and breathable high-elasticity foam, designed for extended wear, providing comfortable and pressure-free comfort.
19. Equipped with a 3.5mm audio adapter cable for instant switching to wired mode and a zero-latency experience.
Specification:
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Shipping Notes
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Exchange/Return Notes
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4.3 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 1
No recomiendo
Format: Paperback
Muy malo, no vine completo, además se demoró mucho más de lo que decía al momento de comprarlo. Solo aplazaban la fecha de entrega sin consultar cómo afectaba al cliente. Yo tuve que presentar el examen sin el libro, porque no llegó en la fecha que decía al comprarlo y después se cambió 3 veces la fecha, casi cumpliendo el mes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
★★★★★ 5
VERY EFFICIENT MATERIAL
Format: Paperback
It's the most efficient material to prepare the test.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2020
★★★★★ 5
All around helpful---worth the money!
Format: Paperback
This guide has been most helpful for all the folks I help prepare for the iTEP test! It gives insight into what each section of the test is looking for along with examples and great tips about actually TAKING the test. In the Writing and Speaking sections, it also gives sample scores and comments from the Master Grader which is very helpful too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 9, 2019
★★★★★ 5
Comprehensive, clear and coherent!
Format: Paperback
The iTEP Practice Guide combines a no-nonsense approach to the specific iTEP tests and at the same time offers exercises that task the student with what they need to know. Exercises not only serve the purpose of scoring well, but the overall approach is communicative competence. We use the text in our group and one-to-one classes with very positive--and lasting--results.
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Reviewed in the United States on July 23, 2019
★★★★★ 1
No recomiendo
Format: Paperback
Muy malo, no vine completo, además se demoró mucho más de lo que decía al momento de comprarlo. Solo aplazaban la fecha de entrega sin consultar cómo afectaba al cliente. Yo tuve que presentar el examen sin el libro, porque no llegó en la fecha que decía al comprarlo y después se cambió 3 veces la fecha, casi cumpliendo el mes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025