{"appears_in":[{"position":4,"ranking_slug":"best-smart-rings-sleep-health-2026","ranking_title":"2026 年智能戒指怎么选：先看尺寸、续航、订阅与手机兼容，8 款睡眠健康戒指横向对比","score":8.7,"url":"https://buyranker.com/ranking/best-smart-rings-sleep-health-2026"}],"brand":"Ultrahuman","buy_url":null,"canonical_url":"https://buyranker.com/product/ultrahuman-ring-air","category":{"name":"智能戒指","slug":"smart-ring"},"cons":["续航不是同价位最长","部分扩展洞察另计费","充电时间偏长"],"description":"功能密度高，适合主动型数据用户。","id":"3f12a467bf2d95ceb2c7945cc332b9cb","image_url":null,"name":"Ultrahuman Ring AIR","official_url":"https://www.ultrahuman.com/global/ring/buy/","price":{"currency":"USD","max":349,"min":349},"pros":["机身轻","基础功能无月费","恢复与节律视角丰富"],"release_year":2023,"slug":"ultrahuman-ring-air","specs":{"充电":"约 180 分钟","重量":"约 2.4g 起","防水":"100 米","基础会员":"无强制订阅","标称续航":"4–6 天"},"summary":"轻量钛合金、无基础订阅，强调代谢与节律洞察。"}