Unverified80% confidenceDecision RuleTime unknown
头围调节范围需匹配自身尺寸，可调范围窄（如仅52-58cm）对大头围或儿童不适配；佩戴过松会导致电极接触不良、信号漂移，购买前确认头围区间
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Unverified适用头围51-54cm，对应大约6-10岁儿童，头围偏小的低龄幼儿或头围已超过54cm的大龄儿童不适合，购买前务必实测儿童头围82% similarUnverified夹持力与适用头围范围存在权衡：宣称'均码通用'的耳罩靠强夹持力覆盖大头围区间，小头孩子会被夹痛；4岁前应买标注具体头围（如48-52cm）的分龄款而非通用款82% similarUnverified购买前确认头围可调范围（44-50cm）是否匹配孩子实际头围，过松易滑落、过紧影响佩戴意愿81% similarUnverified头围超过52cm的儿童不适合选小号，Little Nutty小号适用头围约48-52cm，偏大头型的孩子可能戴不进或夹头，购买前务必精确量头围80% similarUnverified适配儿童头围约16-18cm的松紧范围，头围偏大的大龄儿童（约10岁以上）可能偏紧或尺寸不足，购买前需确认孩子头围是否在适用范围内80% similar
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