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Google Merchant CenterXML feed

<item>
  <g:gtin>4548736141544</g:gtin>
  <title>Sony WH-1000XM5, Wireless ANC Headphones, Black</title>
  <g:google_product_category>233</g:google_product_category>
  <g:product_highlight>30 h battery ANC on, 40 h off</g:product_highlight>
  <g:product_highlight>Bluetooth 5.2 LE Audio, multipoint</g:product_highlight>
  <g:product_highlight>LDAC hi-res audio, JAS-certified</g:product_highlight>
  <g:product_highlight>Lightweight 250 g, foldable</g:product_highlight>
  <!-- Central adds structured product_detail blocks -->
  <g:product_detail>
    <g:section_name>Power & battery</g:section_name>
    <g:attribute_name>Battery life (ANC on)</g:attribute_name>
    <g:attribute_value>30 h</g:attribute_value>
  </g:product_detail>
  <g:product_detail>
    <g:section_name>Connectivity</g:section_name>
    <g:attribute_name>Bluetooth</g:attribute_name>
    <g:attribute_value>5.2 LE Audio</g:attribute_value>
  </g:product_detail>
  <g:product_detail>
    <g:section_name>Connectivity</g:section_name>
    <g:attribute_name>Codecs</g:attribute_name>
    <g:attribute_value>LDAC, SBC, AAC</g:attribute_value>
  </g:product_detail>
  <g:product_detail>
    <g:section_name>Compliance</g:section_name>
    <g:attribute_name>CE marking</g:attribute_name>
    <g:attribute_value>2022 · AUD-9301</g:attribute_value>
  </g:product_detail>
</item>

ChatGPT ShoppingJSON-LD payload

{
  "name": "Sony WH-1000XM5",
  "gtin": "4548736141544",
  "key_specs": {
    "battery_anc_on": "30h",
    "codec": "LDAC",
    "bluetooth": "5.2",
    "weight_g": 250
  },
  "confidence": 0.95,
  "sources_count": 14
}