BitTradeOne Electronic Parts Non-scale Caution! This product does not include the CR927 button cell battery or magnet that serves as the switch. Please purchase separately. LED chip size: 1.6X0.8mm Color: red Body size: 11X11X5mm (excluding protrusions) Battery life: 1-4 hours (gradually dimming) LED life: approx. 30,000 hours Reaction distance: 1 to 3 cm for general magnets Lead wire: thin: 0.3 mm, length: approx. 20 cm Specifications are subject to change without notice. Information editing: Sakatsu Gallery YouTube "Switch on with magnet! LED module with magnetic switch" usage image (Video production: BitTradeOne) is a strong ally when you want to put in a light but have limited space to install a device or do not want to put out a switch! is an ultra-compact LED module that integrates LEDs, a switch, and a battery case in a tiny size of approximately 11 mm in diameter and 5 mm in height.COPY00The device is equipped with a magnetic switch that is activated by bringing a magnet close to it, so it can be operated ON/OFF from outside the case, etc. (not if the case is metal). Power source is a compact CR927 3V button cell battery, batteries can be replaced. (Magnet and batteries sold separately) . CR927 3V button cell red purple yellow blue (colour, color) white green ice blue orange warm white red blue (colour, color) green white warm white orange . blue (colour, color) green ice blue orange purple red white warm white yellow and other multiple-set deals are also available! LED Module Series with Magnetic Switch