zikker D3 2500mAh Magnetic Charger for Apple Watch Series 11-7/Ultra/SE PinkA portable magnetic charger for Apple Watch with a 2500mAh battery that provides 1 to 3 full charges depending on your watch model. The compact design measures just 3 by 1.9 by 0.7 inches and includes a built-in metal keychain for easy attachment to bags or keys. Strong magnetic alignment snaps your watch into place for stable charging. USB-C interface recharges the unit in 1-2 poundsProductdimensions3.7 x 0.7 x 5.2 inches