1. Within one year from the date of purchase, free parts replacement and repair service are available with a valid warranty card or invoice. (Batteries, product casing, and cloth covers are not covered. Free repair includes labor and materials, but transport costs are not included. We do not provide on‑site service.)

2. Damage caused by improper use (e.g., incorrect voltage), accidents, or repair by unauthorized personnel is not covered under warranty.

3. Additional service or transport requests beyond standard warranty will be charged accordingly.

4. Damage due to misuse, improper storage/maintenance, unauthorized disassembly, or lack of valid warranty card/invoice, as well as force majeure, may be repaired at the customer’s expense for parts and transport.

* Note: Maintenance — Take precautions against moisture, rodents, and contamination. Clean only when the device is off. Store in a safe place, do not place heavy objects on it. For faults, consult a professional; do not disassemble the unit yourself.

* As services are continuously upgraded, Shenzhen HongheBusiness Industrial Co., Ltd. reserves the right to modify these terms.

If a performance fault occurs within 7 days of purchase, you may return or exchange the product at the original point of sale with the warranty card or invoice, provided the product shows no external damage, and all accessories and packaging are intact and in resalable condition. Within 15 days of purchase, you may choose exchange or return to factory for repair.

Before using our product, please carefully read and follow the user manual. We assume no responsibility for consequences arising from incorrect use or failure to comply with the instructions.

Our products are household health aids, not medical devices.

This warranty policy from Shenzhen HongheBusiness balances consumer protection and manufacturer liability. The 1‑year free repair covers most internal failures, but explicitly excludes consumables (battery, cover, cloth) and damage from external factors. The 7‑day return and 15‑day exchange window provide a safety net for early defects, while the restriction to “performance faults” prevents abuse.

Notably, the policy places responsibility on the user for transport costs and proper usage, which is standard in the industry. The exclusion of unauthorized repair and force majeure protects the company from avoidable losses. The maintenance guidelines are practical: moisture, dust, and physical damage are the main threats to longevity.

From a consumer perspective, the policy is clear but lacks detail on turnaround times or diagnostic fees. The statement “non‑medical device” is a crucial legal disclaimer. Overall, the terms are fair, transparent, and aligned with typical electronics warranties, though customers should keep their receipts and follow care instructions to maximize coverage.

Core Problem: How to ensure device reliability while protecting the manufacturer from misuse and external damage, and how to handle returns/repairs efficiently.

Solution: Offer a structured 1‑year warranty with clear exclusions; enforce proof‑of‑purchase; provide 7‑day return and 15‑day exchange for early faults; educate users on proper care (moisture, cleaning, loading); and charge for non‑warranty repairs to discourage abuse.

Acceptance Model: Key performance indicators: (1) Warranty claim rate ≤5% of units sold; (2) Average repair turnaround ≤7 business days; (3) Customer satisfaction score ≥4.5/5 for warranty handling; (4) Reduction in misuse‑related claims by 20% after user manual distribution; (5) Compliance with all consumer protection regulations.