Model:lv-910 Solution:u.K. Csr Version:2.1 + edr (dual hp+hfp) Talk time: 4 hours Standby time: 180 hours Coverage:10m Size: 45 x 18 x 22 mm Weight:15g - support multipoint technology (allow to connect 2 mobile Simultaneously) - support easy pairing ii device (allow user paired 2 mobile Simultaneously) - built-in buzzer with control On/off buzzer. - battery voltage level indicator Packing:pvc packing Accessories: user manual, adaptor. Shipment:fca guangzhou Shipping box: 100 set / carton Box dimension: 50 x 45 x 38 cm (per carton) Total weight: 11.8kg / carton