Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Olight S20 Baton LED Flashlight 550 Lumens - Use Two CR123A or One 18650 Battery
Product description: OLIGHT S20 Baton is a portable XM-L LED flashlight, which can be powered by 2CR123A batteries (compatible with 118650 rechargeable lithium battery). It keeps S10 Baton's concise appearance style; the extended tube body makes the product look more slim and straight. It combines a big side switch, strong magnetic flat tail and a removable embrace clip, all these above make S20 is portable and convenient use rather than just small and straight. Features: Aviation grade aluminum body, with anti-scratch type III hard anodizing. Updated the LED to the latest Cree XM-L2.There are four brightness levels: Moon-light, low, middle and high. These levels can be memorized when the light turned off; one special mode: strobe. Under off status, single click will turn on the light, quick double clicking can get high brightness, triple-click enable strobe mode, while long time press enable moon light. With strong magnet in the end of tail, the flashlight can be stick on the iron surface. The magnet can be removed and replaced by users. Invertible U-shape embrace clip. Stainless steel head ring, which can bear higher tensile impaction Flat tail cap, can be easily head stood.S20 is designed for a wide input voltage and both 2xCR123A and 1x18650 are available. Time based thermal management, after lighting on high mode for 4.5 minutes, the output ramps down to 50% of high brightness to avoid overheating.
Product feature: Utilizing the newest Cree XM-L2 LED, Max Output: 550 Lumens, High efficiency driver circuit, 2 x CR123A or 1x 18650 batteries (NOT included), Material - Aluminum body with anti-scratching type III hard anodizing finish
Product brand: OLIGHT
Target attributes: Type
Answer: attribute: type
value: flashlight
source: product description
attribute: type
value: flashlight
source: product title