Li-ion Battery for Apple Watch Series 4 40mm A2058 A20591. The best alternative to primary battery, standby time and call time are equal. 2. Lithium ion batteries provide excellent continuous power supply for your equipment. 3. Good quality and long service life. 4. Compared with nickel cadmium batteries, lithium ion batteries have no memory effect. 5. If you do not use batteries for a long time, please keep them in a cool and dry place and charge them every three months. Specification: General Compatible

1110g (UK plug)

Battery: 22000mAh

beautiful and fashionable

and can be expanded with more games via TF card

Package x 1

Talk Time Up to 8 hours

5 x 5cm fold

PCs and laptops

Smartphone Compatability: Android 5

With Moowii Gaming mapping software

it also can improve sleep quality

old age acne