Batteries: Each flowlight runs on 1 AAA (not included) at full brightness throughout battery life. Please use only rechargeable NiMHs or high quality alkalines. Cheap alkalines will cause your light to last only a few minutes and turn off on impact. We offer rechargeable NiMHs for $1 and they can be charged hundreds of times.
single crystal poi lite head w/ flowlight + 1 AAA battery: 58g