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Callvi V-311 Rechargeable Small Stereo Waistband Voice Amplifier for Teachers
Technical parameters
Product Name | Wired Voice Amplifier | ||||||||||
Model No. | V-311 | ||||||||||
Max output power | 15W | ||||||||||
Output impedance | 4Ω | ||||||||||
Frequency Response | 100Hz ~ 15000Hz | ||||||||||
Charging Voltage | DC 5V / 500mA | ||||||||||
Charging Time | 3-4 hours | ||||||||||
Battery | Rechargeable 18650 type Lithium battery 3.7V/1800mAh | ||||||||||
Working Temperature | -10℃ to 45℃ | ||||||||||
Working time | Music mode: 8 to 10 hours | ||||||||||
MIC mode: 8 to 10 hours |
Features
* Bluetooth transmission supported
* Wired microphone are supported
* Support TF card & U flash disk (not included) with super MP3 audio encoding technology
* Support AUX, can connect with PC, desktop, Ipad, phone, mp3 to work as speaker
* Support charging by DC, power bank and computer
* Hi Fi original sound recording by one key operation
Audio Ampli-
Shenzhen Zhongkerong Information Technology CO., Ltd was established 2014, which was principally engaged in research, development and manufacture of all types of voice ampliifer.
Our main products include Wired Voice Amplifier, UHF Wireless Voice Amplifier, Outdoor Bluetooth Speaker, Portable bluetooth speaker and related multimedia player. All the products were passed CE, ROHS, FCC and KC certifications. In addition to standard products, we also provide OEM and ODM services to meet individual requirements.
We hope to cooperate with more customers for mutual development and benefits. we welcome potential buyers to contact us.
Audio Amplifier
1. Q: Why the voice amplifier with some noise ?
A: Wear microphone correctly and decrease the volume can avoid noise effectively
2. Q: What is the charging time for battery ?
A : Generally 4-5hours, temperature and other factors may change the charge time .
3. Q : What is the lifespan for battery ,can i change the battery after the warranty ?
A: About 2-3 years, please get in touch with us to change the battery .
4. Q: Why sometimes the voice amplifier can’t work ?
A : 1)Please check the microphone is inserted into the right hole 2) if the battery is not used out 3)your voice amplifier is on ? Please contact us if you still can’t solve the problem by yourself .
5. Q: What is the lead time for stocks order , what is the lead time for OEM order ?
A: 3-7days for stocks order , can mix color ,MOQ is 100pcs ..15-20days for OEM order ,MOQ is 2000pcs .
6. Q: What is your shipment ways , and how long does it take?
A: Usually we ship out by DHL ,Fedex, UPS or up to your requirements , generally 3-5 working days
to reach you , sometimes delay as forwarder’s problem .
7. Q: what is your warranty ?
A: our warranty is one year .
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