Support & Downloads
The document and service portal for CYNRIN smart glasses customers: product datasheets, firmware release notes, compliance dossiers and packaging specifications, the 12-month warranty summary, and the RMA process for defective returns. B2B documents are released by email to verified brand and distributor accounts.
Downloads: request files by email
Technical documents carry program-specific branding and, in some cases, customer-confidential configurations. Instead of hosting public files that quickly go out of date, we release the current revision to your account within one working day of a verified request.
| Document | Contents | Access |
|---|---|---|
| V03-T5 Datasheet (PDF) | Electrical, acoustic, battery and dimensions specification for the V03-T5 audio glasses platform. | Request by email |
| E13 Datasheet (PDF) | Platform specification, pairing behavior, charging and operating parameters for the E13 family. | Request by email |
| K01 Datasheet (PDF) | Cycling and outdoor platform specification including polarized-lens options and weight data. | Request by email |
| Firmware & Release Notes | Per-SKU firmware release notes, known limitations and OTA availability for branded programs. | Request by email |
| Compliance Dossier | CE-RED/FCC/RoHS evidence index, DoC templates and battery-transport file list for your market. | Request via RFQ desk |
| Packaging Specifications | Retail-box and master-carton dimensions, weights, FBA label guidance and drop-test references. | Request by email |
| Retailer Marketing Assets | Pack-shots, lifestyle imagery, feature copy and comparison tables for retail listings (brand-approved use). | Request by email |
Prefer the form? Use the request-quote page and name the documents in the message; include your company email for verification.
12-month limited warranty on branded programs
- Coverage period — 12 months from the shipment date stated on the commercial documents for manufacturing defects in materials and workmanship.
- Scope — electronics, battery, acoustic components and frame structure under normal intended use; terms are defined in the OEM/ODM sales contract.
- Program allowances — branded shipments carry an agreed defective-rate allowance and a spare-parts or spare-unit allocation per PO.
- Exclusions — accidental damage, unauthorized repair, water intrusion beyond rated conditions and normal cosmetic wear, consistent with the full policy.
- After-sales operation — RMAs are handled through the process below with coded failure analysis fed back to production.
Four steps from defective unit to closed case
Every return is failure-coded, photographed and traced to its production batch — the analysis feeds corrective action on the line, not just a refund queue.
1. Submit the claim
Your service team emails the support desk with order/PO reference, quantity, failure description and, where possible, video or photos. A provisional RMA number is issued within two working days.
2. Return & intake
Goods return to the designated service address under the RMA packing instructions; units are logged by serial and batch on receipt and inspected within five working days.
3. Failure analysis
Our quality team reproduces the fault on acoustic, optical or board-level fixtures, classifies the root cause and issues an RMA report with failure codes.
4. Resolution
Credit, replacement units or spare parts are issued per contract; systemic findings trigger an 8D-style corrective action shared with the customer program team.
For retail programs we additionally onboard your support staff with failure-code lists, handling scripts, approved troubleshooting steps and firmware recovery instructions, so first-line support stays in your brand’s voice. Service-level details, authorized service-center options and spare-part stocking recommendations are defined in the after-sales service program.
Buying teams should review commercial conditions alongside service terms: payment terms, shipping logistics and the general FAQ.
Downloads, warranty and returns — answered
1
How do I get a datasheet for the V03-T5, E13 or K01?
Where can I download firmware updates and release notes?
What warranty applies to the smart glasses we order?
How long do warranty claims and RMA resolution take?
Do you support our in-house customer service team?
Can you provide compliance documents for our retailer or marketplace?
One desk, documented response times
Customer support is staffed from the Shenzhen headquarters for brand customers and distributors worldwide. Written requests (email or the quote form) create a tracked case from the first message, so nothing lives only in a chat window.
- Sales & document requests — [email protected]
- Warranty & RMA — [email protected]
- Response time — within 24–48 hours, Monday–Friday (China Standard Time business hours)
- What to include — PO/order number, SKU, quantity, failure description and supporting photo or video
Related customer resources
General FAQ
MOQ, samples, lead times, payments and shipping questions answered.
Explore02Warranty Policy
The complete 12-month warranty terms, coverage and exclusions.
Explore03After-sales Service
Service programs, spare parts and retailer-support enablement.
Explore04Samples
Sample types and the 5–15 day sample dispatch window.
Explore05Contact CYNRIN
Office location in Shenzhen and all contact routes.
ExploreNeed a document or an RMA number today?
Email [email protected] with your PO number and the document or failure details. Cases open within 24–48 hours, Monday–Friday.