CatEye: HL-EL160Waterproof IPX7: Operates even after 30 minutes of submersion in adepth of 1 meterLong runtime3x brighter than EL135Light mode memoryBattery: AA alkaline battery x 2pcsWeight: 83 gMount size: 22 - 35 mmORBSimple, compact and lightweightEasy switch operation - lens acts as power & mode buttonSide visibilityVersatile heavy duty rubber strap mountAttaches to seatpost, helmet or bag with the heavy duty rubber bandCR2032 battery x23 modesWeight: 26g