
Smart Glasses
Harmony Polarized Bluetooth Sunglasses – Flip-Up Lens
Harmony flip up sunglasses with polarized UV400 lenses that lift 90°,…
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The Cadence Bluetooth sunglasses (model C8-Lite) are straightforward audio sunglasses: UV-protective lenses with open-ear speakers and a microphone built into the frame. There is no app and no translation to set up; pair them with any Bluetooth phone and they play music and handle calls.
Who it’s for: Cadence is for people who spend time outdoors and want music and calls without earbuds.
| Model | C8-Lite |
|---|---|
| Bluetooth | 5.3 |
| Range | 10m |
| Battery | 120mAh (3.7V) |
| Music playback | About 4 hours |
| Charging | USB DC 5V, 1.5–2 hours |
| Colours | Black, grey, yellow |
Sunglasses that play your music and take your calls, with nothing in your ears.
Earbuds outdoors cut you off from traffic and people; open-ear audio keeps you aware.
The Cadence Bluetooth sunglasses (model C8-Lite) are straightforward audio sunglasses: UV-protective lenses with open-ear speakers and a microphone built into the frame. There is no app and no translation to set up; pair them with any Bluetooth phone and they play music and handle calls.
Bluetooth 5.3 gives fast pairing and a stable connection up to 10 metres, and the 120mAh battery provides about 4 hours of music with a 1.5–2 hour recharge.
Choose Cadence if you want sun protection plus audio without paying for AI features you will not use.
Cadence is for people who spend time outdoors and want music and calls without earbuds.
Newer Bluetooth pairs quickly and holds a steady connection up to about 10 metres, with good audio stability for music and calls.
The speakers sit by your ears without sealing them, so you keep hearing traffic, people and the environment, which is safer outdoors than in-ear earphones.
A built-in microphone lets you answer and make calls without taking out your phone.
The tinted lenses shield your eyes from strong sunlight during outdoor activities.
No app is needed: they work like any Bluetooth headset with phones, tablets and laptops.
A full charge covers a long drive or an afternoon outdoors, and recharges in 1.5–2 hours over USB (DC 5V).
They pair over Bluetooth with any modern iPhone or Android phone, and also with tablets and laptops that support Bluetooth audio. Cadence does not translate and has no app. Prescription lenses cannot be fitted.
Wipe the lenses with the included microfibre cloth; avoid paper tissues, which can scratch the coating. Keep the charging contacts clean and dry before charging, store the glasses in their bag when not worn, and do not leave them on a car dashboard in direct sun, as heat shortens battery life. Rinse off salt water or heavy sweat with a damp cloth rather than running water, and never submerge them.
| Model | C8-Lite |
| Bluetooth | 5.3 |
| Range | 10m |
| Battery | 120mAh (3.7V) |
| Music playback | About 4 hours |
| Charging | USB DC 5V, 1.5–2 hours |
| Colours | Black, grey, yellow |
Shipping is free on orders worldwide. Orders are prepared and dispatched within 1–3 business days and typically arrive within 4–8 business days in total, with tracking sent by email. Customs or public holidays can occasionally add a few days, and some items ship directly from our supplier.
You have 14 days from delivery to return the product for a refund, for any reason. It must be new, unused and in its original packaging with all accessories and documents. Contact us at metanexusxr@gmail.com with your order number to start the return. Consumables such as face cushions, foam pads or batteries showing wear cannot be refunded.
Every new product bought from our store has a 3-year legal guarantee from delivery (1 year for refurbished items). If anything goes wrong, email us your order number and a short description or photo and we will handle the claim with you.
Full details: Shipping policy · Refund policy
Full details: Warranty terms · Terms of service
No. Cadence is audio-only; choose Babel, Meridian or Pulse if you need translation.
No, they pair like any Bluetooth headset.
About 4 hours of music per charge.
Yes, the open-ear speakers do not block your ears.
Yes, a microphone is built in.
Yes for sun and audio; they are not rated for heavy water exposure, so wipe off snow and moisture. Compare it with our other smart glasses, or browse the full range of AR and smart eyewear at Metanexus XR.
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Cadence Bluetooth Audio Sunglasses – UV ProtectionThis product | Harmony Polarized Bluetooth Sunglasses – Flip-Up Lens | Bluetooth Audio Glasses – AI Translation & UV Protection | |
|---|---|---|---|
| Price | $56.00 | $47.00 | $62.00 |
| Best for | Cadence is for people who spend time outdoors and want music and calls without earbuds. | Harmony is for people who move between sun and shade often and do not want to keep swapping glasses. | This listing is for people who mainly want music and calls from their sunglasses. |
| Model | C8-Lite | — | GY200 |
| Bluetooth | 5.3 | 3.0 + EDR | BLE 5.4 (A2DP, HFP) |
| Range | 10m | — | 10m |
| Battery | 120mAh (3.7V) | 160mAh | 55mAh + 55mAh |
| Charging | USB DC 5V, 1.5–2 hours | — | Magnetic, DC 5V |