Belsavis Battler Lightsaber

All Lightsabers with the Energized sound type have the same sound, including the Belsavis Battler Lightsaber. This isn't the official name, and this Lightsaber sound type may be labelled something like weaponmeleelightsaber01 in the background of the game.

I do not have a video of the Belsavis Battler Lightsaber, but you can watch a video of the Volatile Conqueror's Saberstaff weapon to hear the Energized sound type, which is the same as the Belsavis Battler Lightsaber.

These low-level weapons sets are awarded for specific quests on specific planets, and you can only get them while playing a specific story / Combat Style. Most of them are a part of your class story quests - if you skipped the class story, or played the wrong role or class when the mission completed, there's no way to go back and get that specific weapon, though there may be look-alikes out there.