both turn on however 3100 had a faulty power button and doesn't turn back off until a while, the 6100 has a wobbly metal insert where the brush goes. both untested fully, can't confirm if there are other issues or not comes with charger
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Electric Toothbrush Travel Case Fit for Oral B IO and Philips Sonicare Electric, portable and easy to use
Aliexpress UK
eBay
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Aliexpress UK
Used but Works very well.
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Aliexpress UK
Really lovely electric toothbrush. Working very well and in good condition! Deep Clean.
eBay
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Aliexpress UK
Key features include 1x Toothbrush Handle. 1x Generic Toothbrush Head.
eBay
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Aliexpress UK
Lovely classy textured finish to the case - not plain plastic.
eBay
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Aliexpress UK
Green with travel case. You are buying the handle and the case only, as you see in photos.
eBay
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Aliexpress UK
Working Well.
eBay
USB Electric Toothbrush Charging For Braun Oral B Series D12 D20 D16 USB Travel Charger Dock 3757 Toothbrush Charging Stand
Aliexpress UK