SONY WF-C700N Black - Left Earbud Version 2.0.5 I am selling this because I lost the right earbud and purchased a new set. I used it for about 30 minutes every day commuting. I used it for about six months. I have confirmed that it works for up to 3 hours of charging. I used it with only the left earbud even after losing the right one. I am a novice, so I do not know how to pair or initialize it. Please refer to the Sony website. Disinfected with alcohol wipes. I will wrap it in bubble wrap and ship it via Yu-Packet Post Mini. Sony Model Name: WF-C700N Other features: Noise canceling