Speakers with working frequency response range from 20~150Hz are called full range speakers.
FAQ
Q1. What is the MOQ? Subwoofer Subwoofer Speaker,Car Subwoofer,Wireless Subwoofer,Home Subwoofer Shenzhen Xuanda Electronics Co., Ltd. , https://www.xdecspeaker.com
The iblazr is equipped with a 200mAh polymer lithium battery that can flash 1000 times or constant light for 40 minutes. The iblazr comes with a flexible USB cable that can be used as a small desk lamp for portable devices such as laptops/tablets. 
The unit comes with free iOS and Android apps that sync with the camera shutter. To enhance the quality of your photos, the app also includes an enhancement filter. 
After a year of prototyping and fine-tuning, the iblazr team has placed the project on Kickstarter and pushed the vector, and the black/white version requires at least $39. If you feel that the plastic is not elegant enough, you can also choose the iblazr version of the anodized aluminum version of the constant light mode. 
XDEC: 2000pcs for one model.
Q2. What is the delivery lead time?
XDEC: 15 days for normal orders, 10 days for urgent orders.
Q3. What are the payment methods?
XDEC: T/T, PayPal, Western Union, Money Gram.
Q4. Can you offer samples for testing?
XDEC: Yes, we offer free samples.
Q5. How soon can you send samples?
XDEC: We can send samples in 3-5 days.
Recently, the Ukrainian iblazr team developed a "fully synchronized LED flash module" that can be plugged into a 3.5mm headphone jack of a mobile phone or tablet to eliminate accidental effects such as white or red eyes. The one-piece LED head design delivers up to 200lux of light intensity over a 60° angle. It also does not need to draw power from the main unit due to its own battery.