OSTRY first HIFI headphones "Fortress Besieged" , inspired by the ancient battlefield Besiegeddesign earplugs. OSTRY laboratory using a number of core patents and patents. Is a suitableclassical , vocal , music, pop and other styles of three-band equalizer plug is also a need burneasily push a little taste of iron driven dynamic ear earplugs .
1 No need to burn .
2 . Siege Sensitivity ( 110db), the same volume loud bigger. For the front of the highly adaptive .At the same time pay attention to the high frequency of the siege balance and transparent, theseparation and resolution of a good performance .
3 fusion part iron technology.
4 earplugs shell with titanium technology to ensure the texture and practicality , anti- scratch and corrosion resistance.
5 tpu wire. Good texture , reduced wound wire clutter . Meanwhile wire tensile dramatically.
6 splitter minimal. In the position of the wire no off -line recombinant ensure integration , enhanced tensile strength of the wire , the wire resistance is not guaranteed because the splitter factors.
Siege headset will change the normal style pouch for the kit bag, the silicone plugs for qualitative
analysis and design, with two silicone plugs . One is transparent plug A balanced plug. In order to
meet the needs of different users .
Driver unit : 10mm CCAW patented second-generation dual-chamber
Zhen film : EBT ( based on bionic technology eardrum )
Sensitivity : ≥ 110dB (at 1000HZ)
Rated impedance : 16Ω ± 15%
Frequency response : 20Hz-25KHz
Distortion : <1% 110dB (20μpa)
Channel difference : <1.5dB (at 1000Hz)
Rated power : 10mW
Conductor : 1.35m environmental antibacterial TPU wire
Process: tiny splitter craft , titanium and crafts
Worldwide Free Shipping on SHENZHENAUDIO, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.
If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.
Which Couriers To Use?
Given the amount of shipping partners we work with and the vast coverage area we serve, there are likely regions with much longer transit times than others. If you have any feedback, suggestions, or problems with the courier of your shipment, please feel free to submit a support ticket via the "Contact Us" button below.
Our goal is to provide our customers with the best shipping experience possible at a reasonable cost. This is why we constantly negotiate with existing shipping partners for lower rates and actively test new couriers for potential opportunities.
PO boxes or APO/FPO
The ability to ship to PO boxes or an APO/FPO address depends on the item's weight. If an item weighs more than 9 pounds, we won’t be able to ship to these addresses because of our current courier agreements.
To determine if your order is eligible for shipment to PO boxes or an APO/FPO address, please contact SHENZHENAUDIO Support.
Estimated Delivery Time
For customers in the continental United States:
5 to 14 business days from the date of shipping
For customers in Hawaii and Puerto Rico:
2 to 4 weeks from the date of shipping
International customers can expect longer shipping times, depending on the country in which they live:
Canada: 1 to 3 weeks from the date of shipping
Australia, New Zealand, Germany, France, and the UK: 2 to 4 weeks from the date of shipping
Other countries not listed above: 3 to 6 weeks from the date of shipping
Please keep in mind that these are rough estimates and shipments can be delayed due to unforeseen circumstances, like postal strikes or severe weather.
If, for some reason, you don’t receive your order within the estimated time frame provided above and suspect that it might be lost in transit, please submit a support ticket from your transactions page and we can look into the order with the courier. Lost-in-transit requests must be submitted to SHENZHENAUDIO Support within 4 months of the date of shipping or before the courier archives the tracking information.
Easy 30-Day Return Policy
If you are dissatisfied with your purchase for any reason, you may return it to SHENZHENAUDIO within 30 days of the received date, subject to the conditions and exclusions below.
Please read conditions below. If all conditions are not met, SHENZHENAUDIO reserves the right to refuse the return. All returned items must be in new condition, in their original unaltered box (including an intact UPC code) and must include all packing material, blank warranty cards, manuals and accessories. SHENZHENAUDIO can only refund the original purchase price. Shipping and handling fees are nonrefundable.
Defective or Damaged Items
Defective items may be repaired, exchanged or refunded at our discretion for the same model or manufacturer's equivalent model.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary. Please allow 3-5 business days for mail-in exchanges to be processed.
Refunds & Credits
Once we receive and inspect your item(s), we will credit your account. Please allow 5-7 days for a credit to appear on your account. In most cases, we will issue your refund in the same way you made the original purchase. Please note: we can only refund the original purchase price. Shipping and handling fees are nonrefundable.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
ShippingTo return your product, you should mail your product to: 4F 405, Building F, No.2 Shangxue Science and Technology North, Bantian Street, Longgang Dist, ShenZhen, 518129 Guangdong, China
If you’ve done all of this and you still have not received your refund yet, please contact us at firstname.lastname@example.org.