Basics Power Charging case dimension: 38*60*60mm Input voltage / current: DC 5V/1A Earbud dimensions: 22*28*29mm*2 Earbud Battery: 60mAh*2(Fully charged in 1.5H) Net weight: 6g*2(Earbuds)/59g(Charging case) Charging case battery: 720mAh Playtime (without charging case): 3.5H (medium volume) Chipset Talk time(without charging case): 4.5H Bluetooth Version：V5.0 Standby time(without charging case): 80H Wireless working range: 10M (without obstacles ) What You Will Get Speakers 1*G1 earbuds Speaker: Φ5.8MM, Titanium diaphragm 1*user manual Speaker sensitivity: 90±3dB 1kHz/1mW 3*earhook Profiles supported: HSP, HFP, A2DP, AVRCP,TWS，AAC 3*earcaps Impedance: 16Ω±15% 1kHz 1*USB Cable Speaker frequency: 20Hz～20KHz 1*Wireless Charging Pad (G1C only)