supply of supply of rechargeable led based flashing tail l as per item description. , supply of rechargeable led based flashing tail lamp as per specification: [1] rftl works wit h 3.7v 4200mah rechargeable lithium ion battery (2) dimension: length : 165mm(max) width : 85mm(ma x), height : 90mm(max) enclose made from virgin abs material, colour of the body : post office red, smps charger provided for charging the 3.7 v 4200mah lithium ion battery with an output of 5v 500ma front gla ss 2mm acrylic sheet is provided. toggle switch is provided for easy operation of lamp. red aspect with 60 pulses per minute. dust and rain proof. back up: once fully charged lamp will work for 120 to 150 hours. w eight: 800 grams(max), visibility: the visibility of the tail lamp should be 1.6kms along longitudinal axis and 100m at 6 degree angular displacement from longitudinal axis. [ warranty period: 30 months after the d ate of delivery ] ]