【K Head Connector Compatible Notice】Two-pin standard plug diameter 2.5mm and 3.5mm, space of two-pin 11mm, this 2 Prong wireless dongle compatible with SAMCOM FPCN10A/FPCN30A walkie talkies, and not compatible with Motorola and Midland Radios 【2-IN-1 USB Charger Cable】Charger time 1.5H; Each Earpiece Work Time about 4 hours, 2 Pin adapter Work Time: 10 Hours 【Noise-Cancelling Mic with PTT】Stay connected with the re-charging wireless headset, featuring a noise-cancelling mic and a flexible earpiece for all-day wear and comfortable, long-lasting use 【Replaceable Ear Hooks & Ear Caps】Great ideal for business/school/Security work, featuring a compact and lightweight with ear-hook design. Suit for scene of large-scale activities 【Please Noted】 SAMCOM BTEAR-02 wireless headset also not Adapt with other wireless device (like computer, phone, laptop and so on). Please check the interface type of your 2-way radios before purchase