Bluetooth Wireless Earphones, Equipped with MP3 Player, Sound Rim 2. [Features]. This is a headphone with sound rim 2, Bluetooth and MP3 players. Not only is it Bluetooth, it also supports TF card so it can be used as an MP3 player. If you insert a microSD card (supports up to 32 GB), it will enter MP3 player mode (*All Bluetooth functions are off). Bluetooth 5.0 technology improves the signal strength and reduces delays and disconnection compared to previous generation models. The power consumption is also 35% reduced, and the battery is long lasting. ● Neckband type that does not come off even during intense movement. Lightweight at only 1.4 oz (40 g). Enjoy music without feeling burden on your ears. ● Can play music for about 10 hours. The memory alloy wire can be rolled up and stored after use, making it convenient to carry. Specifications: Bluetooth version: 5.0; System language: Japanese; Battery capacity: 300 mAh; Continuous music playback time: about 10 hours; Continuous talk time: about 13 hours; Continuous standby ...