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Amazon.com: Sony NP-BY1 Rechargeable Battery Pack 640mAh : Electronics
Amazon.com : Kastar 1-Pack Battery Replacement for Sony NP-BY1 NPBY1 Battery, Sony Mini HDR-AZ1 Mini HDR-AZ1vb Mini HDR-AZ1vr Video Cameras : Electronics
Sony NP-BY1 Y Battery for Action Cam Mini NP-BY1 B&H Photo Video
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