Frequently Asked Questions

Leion HEY2 uses LLVISION’s proprietary AI engine to capture speech through a quad-mic array, process it on-device, and project translated text instantly onto the AR display—with latency as low as 200 ms.

For best accuracy, HEY2 connects to Wi-Fi or mobile data. In limited-network areas, offline translation for selected languages remains available through downloadable packs.

LEION HEARING displays real-time speech-to-text captions in your view for everyday conversations, appointments, meetings and shared media. It is a captioning device, not a hearing aid or medical device.

Yes. LEION HEARING supports compatible prescription lenses ordered through LensAdvisor. You may need to provide SPH, CYL, Axis, PD and ADD when applicable. Custom lens return terms are explained below.

Yes. The HEY app (iOS & Android) syncs your glasses for language settings, conversation history, and firmware updates.

The glasses run up to 8 hours continuously. The compact charging case provides 12 extra recharges—totaling 96 hours of extended use.

Each HEY2 package includes the glasses, a charging case, Type-C cable, quick-start guide, and microfiber pouch.

LEION Hey2 includes a 1-year limited warranty; LEION Hearing includes a 2-year limited warranty. Compatible prescription lenses follow the corresponding model's warranty period, starting on each item's delivery date. Customer-provided prescription or PD errors, fit or comfort issues, and lens scratches are excluded. See the Warranty Policy for full terms.

Custom prescription lenses are non-refundable after processing unless LEION made an error. We cannot accept returns or exchanges for prescription details entered incorrectly by the customer or for fit or adaptation issues.

Non-custom items in a LEION HEARING pre-order may be cancelled any time before shipment. Custom lenses and any inseparable package may be cancelled only before processing or fabrication begins; afterward, refunds are available only if LEION made an error. See the Refund Policy.