... .2. Size choice:2.5cm,3.5cm,4cm,4.5cm,5.5cm,7.5cm etc or your customized size3. Various lights ... , Pink, White,Multicolor.4. Meterial choice: metal,plastic or tinplate5. Batteries 1 piece CR927 and 1 piece CX927 together for each ... 20000hours.4.It is super slimmed , soft light, flexible material .5.Soft light,green product,no heat,no radiation.6.Rich ...