The wireless bluetooth earbuds are secure behind your ears and rest comfortably in the ear canal. the power of Bluetooth V4.1 + EDR technology for seamless syncing to your favorite wireless devices. It can deliver up to 4 hours of play time on a full charge. It is great for Gym, Running, Jogging, Hiking, Cycling, and impact Sports. Your logo is welcome. Features: Bluetooth version of 4.1+EDR Support protocol of A@DP, ACRCP, HFP, and HSP Supports hands-free calls and listen to music while driving and jogging Impedance: 32? ± 15% Sensitivity: 108dB±3dB Frequency Response: 20Hz-20KHz Rated Power: 2.5mW Max Power: 5mW Battery capacity: 55mAh Working time: 3 - 4 hours Standby time: 150hrs Certificates: CE, RoHS, FCC Price Includes: Free setups Free virtual proof Free Logo PMS matching Free 2C imprint on 1 side Free standard shipping to 1 continental US commercial location Lead Time (including shipping time): Standard Service (business days): 10 business days Rush Service (business days): Product Detail: Type: 4.1+EDR Bluetooth Earbud Capacities: Standard Colors: Black, White Imprint Methods: Silkscreen (max 2C) Imprint Location: Controller Imprint Size: 1" x 0.3" MOQ: 100 Item Dimension (inch): 23.6" x 0.67" x 0.59" Item Shape: Earbud Material: ABS Standard Package: polybag/ box Item Weight (g): 13