Start with the type you need
- Fitness bands: the Xiaomi Smart Band 10 NFC and Smart Band 10 Pro are built around long battery life and 5ATM water resistance. The 10 Pro is thinner and adds standalone GNSS, so it leans toward sport. The Fitbit Charge 6 runs up to 7 days and suits people in Google's health ecosystem who want heart-rate sync with gym equipment.
- Smartwatches: the Apple Watch Series 12 and Ultra 4 require an iPhone. The Series 12 is rated up to 24 hours in normal use. The Ultra 4 has a titanium case and 100-meter water resistance for runners, trail runners and divers. The Google Pixel Watch 5 needs an Android phone.
- Smart glasses: the Rokid Glasses display model (49 g) puts translation, AI answers and directions in your view. The Xiaomi AI Glasses (40 g without lenses) have no display and focus on photos, 2K video and the Xiao AI voice assistant.
- Smart ring: the Oura Ring 4 is a titanium ring for tracking sleep, heart rate and stress without daily charging. Insights need a paid membership.
China model vs US model
- Fitbit Charge 6 and Pixel Watch 5: no official sale in China, and no official China warranty or service channel.
- Apple Watch Series 12 and Ultra 4: the US pages list Siri powered by Apple Intelligence; in China, the Apple Intelligence rollout depends on regulatory approval. Warranty is Apple's one-year limited warranty in both.
- Fitbit Charge 6: ECG and irregular rhythm notifications are limited to select countries, and SpO2 and skin temperature may not be available everywhere.
- Xiaomi Smart Band 10 Pro and Xiaomi AI Glasses: the card specs are for the China models.
- Rokid Glasses: specs come from Rokid's global store; confirm AI service support in your region with the seller.
Common pitfalls
- Subscriptions: Fitbit Premium analytics, Google Health Premium coaching on the Pixel Watch 5, Oura Membership and full Rokid navigation all cost extra.
- Wellness, not diagnosis: blood pressure trends and insulin resistance tracking on the Pixel Watch 5 are wellness metrics.
- iPhone gaps: some Smart Band 10 sleep research features do not support iOS, and some Smart Band 10 Pro features are Android-only or limited to certain Xiaomi phones.
- Water limits: neither Xiaomi band is meant for hot showers, saunas or hot springs, and leather, woven, silk or metal straps should stay out of the pool.
- Accessories: Xiaomi bands need the official charging cable, and some straps and the desk dock are sold separately. Rokid prescription lenses need a separately sold magnetic frame.
- Xiaomi AI Glasses: camera features work only with phones on Xiaomi's list, some features need a system update and the Xiaomi Glasses app, and the rating is IP54 with an operating range of 5°C to 35°C. Try them on in a store first.
- The Pixel Watch 5 card covers the 41mm Wi-Fi model with no LTE, so keep your phone nearby for calls and notifications.
- Oura Ring 4: Oura is promoting a newer ring it says is 40% smaller. Sizing differs by generation, so use the Ring 4 sizing kit.
How to read our cards
Every card here currently calls China and US prices roughly even. Open each card for today's prices.
- Xiaomi Smart Band 10 NFC: 21-day typical battery, 5ATM, all-day heart rate and SpO2. Card says: buy.
- Xiaomi Smart Band 10 Pro: 9.7 mm, 21.6 g, standalone GNSS, for athletes and swimmers. Card says: buy.
- Apple Watch Series 12 42mm GPS: heart-rate variability, sleep apnea notifications, wrist temperature. Card says: wait.
- Apple Watch Ultra 4 49mm: titanium, 100-meter water resistance, up to 50 hours in normal use. Card says: wait.
- Google Pixel Watch 5 41mm Wi-Fi: Google integration and health tracking for Android users. Card says: wait.
- Fitbit Charge 6: 7-day battery for the Google ecosystem; advanced coaching is paid. Card says: wait.
- Rokid Glasses (display model): translation and directions in view. Card says: buy.
- Xiaomi AI Glasses: photos, 2K video and voice; the standard version takes custom prescription lenses. Card says: buy, after a fitting and a phone check.
- Oura Ring 4: a smaller successor is already on sale, so compare first. Card says: wait.
Before you buy
- Match your phone: Apple Watch needs an iPhone, Pixel Watch 5 needs Android, and Xiaomi bands lose some features on iPhone.
- Add up subscription costs.
- Check region-limited health and AI features.
- Pick the exact model: NFC band or Pro, display glasses or not, Ring 4 or its successor.
- Read the water rating and strap material before you swim.
