Audio-Technica ATH-ANC70 QuietPoint Manuel D'utilisation page 5

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Installing the battery and case construction
Push Up Peel Off
The ATH-ANC70 requires one AAA battery for operation (included). Use disposable AAA alkaline
batteries or rechargeable AAA batteries.
1. Move headphone power switch to the OFF position.
2. On right earcup of headphone, using two thumbs, push the cover up.
3. Pull cover from headphone case and pull/peel out. (Cover is tethered to the headphone).
4. Install battery noting polarity (+/-) as indicated.
5. Install cover and side/click cover down to lock position.
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