Feature: 1. With Vibrating Alert Function, handsfree calling, let you won\u0027t miss any important calls. 2. Easy to wear clip, with functional clip, carry your Fineblue conveniently on your shirt. 3. Extra-long talk/playtime, up to 8 hours of talk/playtime, and 180 hours of standby time. 4. Pair two phones simultaneously, enjoy the comfort of pairing two phones at the same time with Fineblue. 5. Retractable cable technology, after finishing your call, retract your cable with a single push of a button (build-in 30cm cable). Specification: Features: With Vibrating Alert Function, hands-free calling, let you won't miss any important calls. Easy to wear clip, with functional clip, carry your Fineblue conveniently on your shirt. Extra-long talk/playtime, up to 8 hours of talk/playtime, and 180 hours of standby time. Pair two phones simultaneously, enjoy the comfort of pairing two phones at the same time with Fineblue. Retractable cable technology, after finishing your call, retract your cable with a single push of a button (build-in 30cm cable). Specification: Model: Fineblue F990 BT Version: 4.0 Battery: 80mAh Standby Time: about 120 hours Talk Time: about 5 hours Power Adapter: DC5V 1A Charging Time: about 2 hours Frequency: 2.4GHZ Color: Black Item Size: 6*3*2.5cm/2.36*1.18*0.98in Item Weight: 20.2g/0.71oz Package Size: 19*10.5*3.5cm/7.48*4.13*1.38in Package Weight: 127g/4.48oz Package List: 1 * Headset 1 * USB Charging Cable 1 * User Manual Package List: 1 * Headset 1 * USB Charging Cable 1 * User Manual