I’ve been carrying a NiteKing M10 in my pocket for almost 10 years. It’s worn through several Cargo pant pockets (!) but it has served me well and is really bright, using a rechargeable EBL 14500 battery.Recently, I invested in a Micro Maxpedition EDC pocket pouch and have been able to add to my EDC carry list without too much bulk in my front pocket. Having the larger NiteKing in my pocket, in addition to the pouch, is impractical. I needed a much smaller flashlight. After a lot of research, I ordered the Baton 4 (in black/blue). It was a tough call at nearly $70 for such a tiny thing but, what a tiny thing! I was really tempted by the green/gold version. That looks gorgeous. However, I know this light will get dirty and scratched over time. Black is better in the long run..When I got the OLIGHT in my hand, it was even smaller than I’d imagined. It actually fits really well in my pouch because it is so small but I decided to keep it in my pocket as that makes it more quickly accessible, especially in the dark. I like the fact that you can easily lock the power button, with a long press when off. My NiteKing often warmed my leg before I realized it was on. I’ve already used the magnet on the end, to hold the flashlight above my bench in my unpowered garage. That feature is very useful and can even act as a retrieval magnet for dropped items when a cord is attached via the pocket clip. The double-bent pocket clip not only allows for clipping on a pocket flap, but for clipping on the peak of a cap, as a headlight. The light weight means the cap doesn’t drop down at all..The beam intensity and battery power LED indicators on either side of the power button are not visible when your thumb is on the button. They extinguish fairly soon after a button press and often, I look, see just my thumb, remove my thumb, and they are dark. Useful though. The power button has been reduced in height from the Baton 3. It is now almost flush with the body. That actually makes it harder to locate by feel. I’ve learned to feel for the pocket clip in my grip and the button is opposite that. I’d actually prefer a more tactile button, using the lock feature to avoid accidental operation. With gloves on, that power button is really tricky to find!.I’ve not used it long enough for the temperature control to kick in and kick down the brightness when in Turbo and High. Turbo is awesome. Even high is fantastic. Incredible when you consider the size of this light. Low and medium are often enough, though I must admit I love a bright white light when out in the dark. You have more time when that man-eating animal comes for you. 😊 Moonlight mode at 0.5 lumen is handy when you don’t want to disturb your partner, though you need dark-adjusted eyes for it to be really effective. The controls are easy to learn and operate..My photos were taken at Low, Medium, High, and Turbo. The tree is 60ft away and the garage doors, 130 feet away. The beam has a fairly large hotspot, but also a wide outer ring of light. My NiteKing has a much tighter beam and is not as bright. I guess that’s 10 years of development progress! 😉.I do like that I can have separate spare batteries for my NiteKing and can swap them out when the current battery is dying. As I understand it, you can still swap out for commercial versions of the Baton 4 battery but you can’t use the magnetic charger and charge in the flashlight. Not sure what other features also don’t work, maybe nothing else is affected. Only the OLIGHT proprietary battery allows that.I didn’t want to spend $100 for the charging case kit. $70 was enough and I’d be carrying a bulky charging case around with me. I already have a slimline, pocketable, INUI, 10,000 mAh, power bank..Overall, I am really pleased with the Baton 4. It’s proven well worth the money, especially since I won’t be wearing out pockets anymore! 😊