Panasonic Eneloop Pro rechargeable AAA battery pack of 4.

Features of Eneloop PRO batteries

• Eneloop technology: extra high capacity NiMH batteries ideal for devices with high power consumption such as digital cameras. 
• Pre-charged and ready to use straight from the pack.
• Recharges up to 500 times. You'll use hundreds of alkaline batteries just to match the overall life and performance of Eneloop batteries.
• Low self discharge means eneloop batteries are still ready for use even after long periods of storage - up to 85% after 1 year!
• Environmentally friendly - Eneloop batteries and packaging are completely recyclable.
• Rechargeable on most standard & fast chargers designed for NiMH batteries. 
• Made in Panasonic Wuxi Plant.