Anker Soundcore R50i. Purchased at a 7-Eleven in Taiwan for approximately 5000 yen. The same as the ones sold in Japan. Brand new, unused, unopened. The Japanese instruction manual can be found online. - Model Name: R50i - Brand: soundcore - Water Resistance: IPX5 - Playtime: Up to 30 hours (with charging case) - Driver Size: 10mm - Call Function: Enhanced calls with two microphones - App Support: Compatible with the soundcore app - Echo-less Function: 22 preset echoes