... with mil Specifications Reusable Gel Baby Milk Bottle Warmer 1.CE,MSDS,6P,EN71,FDA,SGS 2.no external power 3 ... used outdoor for physiotherapy 4) Especially effective on muscle aching, back aching, cramps arthritis pain and tenontodynia 5) To recharge: place ... well as reusable gel packs for users to choose from CE approved Baby bottle warmer,milk bottle warmer