Waveworn Residue 210 is one of four Waveworn Residue materials you can obtain in Wuthering Waves. This one in particular is a base material used in the first skill upgrade of your broadblade Resonator.
3 Ways to Get Waveworn Residue 210 in Wuthering Waves
Since it is a base material, there are several easy ways to obtain Waveworn Residue 210 in Wuthering Waves.
In Wuthering Waves, there are three ways to obtain Waveworn Residue 210:
Once you have at least two Waveworn Residue 210s, you can upgrade your broadblade Resonator's Basic Attack, Resonance skill, Forte Circuit, Resonance Liberation, and Intro Skill. The first upgrade for these skills costs two Waveworn Residue 210s and two LF Howler Cores. However, you can only upgrade these skills if the broadblade Resonator has a Resonator Rank of Two.