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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
DuraMOBI Hummingbird Black Technology Bone Conduction Wireless Speaker Portable Small Audio, Silver, Black, Red1. Bone conduction black technology, two channel, real stereo sound 2. Long battery life, built in FM, HD calling, HD sound quality 3. Lightweight and small body, easy to carry 4. High sensitivity microphone, diamond knife pattern splitting process 5. The principle of bone conduction, through high frequency and low density vibration, the ear bones make a pleasant sound 6. Dual channel, 2 bone conduction transducers 7. Built in Bluetooth 5. 0, FM
1. Bone conduction black technology, two-channel, real stereo sound
2. Long battery life, built-in FM, HD calling, HD sound quality
3. Lightweight and small body, easy to carry
4. High sensitivity microphone, diamond knife pattern splitting process
5. The principle of bone conduction, through high-frequency and low-density vibration, the ear bones make a pleasant sound
6. Dual channel, 2 bone conduction transducers
7. Built-in Bluetooth 5.0, FM enhanced IC, TWS wireless stereo
8. Signal to noise ratio: greater than or equal to 70db
9. Shell material: metal
10. Power supply mode: USB charging / built-in lithium battery
11. Waterproof grade: IPX 2
12. Audio decoding: support MP3 / AC3 / AAC / WAV and many other
13. Battery capacity: 400mAh
14. Frequency response range: 20Hz-20KHz
15. Interface type: USB
16. Function: music, call
17. Charging time: 1 hour
18. Playing time: 6 hours
19. Standby time: 240 hours
20. Input current: 0.4A
21. Output power: 3W
22. Input voltage: 5V
23. Dimensions: 40 x 25mm
24. Weight: 35g
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
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4.5 ★★★★★
Based on 274 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.
WAS THIS REVIEW HELPFUL?YesReportShare
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