The Yocan Black JAWS Hot Knife & Thermometer is an accompanying accessory that can be used on almost all Yocan Black devices. It is a hot knife and thermometer in one so you already have a multi-tool in your hands. It's a great accessory for anyone looking to elevate their vaping experience or for anyone who just wants to update their dabbing EDC. Yocan has given the Yocan Black JAWS Hot Knife & Thermometer a 1800mAh battery that can last you a long time of use in between charges. This means that you can literally charge this accessory and basically just recharge it a week later.