This solar powered watch recharges itself in any kind of lightThis solar watch does not require any battery replacement. -The watch has a calendar function: Date Solar Powered Radio Controlled 24-hour Display Worldtime Luminous Hands High quality 21 cm length and 21 mm width Silver Stainless steel strap with a Fold over with push button clasp Case diameter: 44 mmcase thickness: 12 mm case colour: Silver and dial colour: Blue Water resistant: 20 bars -Weight: 182 g The watch is delivered in an original gift box and has a warranty of 2 years