The product is a MZ 18650 3000mA 3.7V Li-ion Battery, its PCB life is around 10 years.High rate discharge, no "memory effect" Short ciruit, overcharge and discharge protection PCB life is around 10 years, it is green42733
"Love the nacklace great style and quality thank order againe"
"I had ordered this product and my payment was taken but there was not shipping info. I contacted the seller and the SAME DAY they wrote back giving me a valid tracking number (pay pal had just not updated their shipment info). It said expected delivary was Sept 16-Oct 7th. My package was delivered yesterday Sept 8th... I am VERY satisfied and love the product :) thank You!"