Operating keys includes: volume Up/Down & 3 LEDs (green, yellow & red) / Up to 10 hours operating time & up to 200 hours of standby time # The BH-104 Bluetooth Headset by Nokia is perfect for your eight hour workday, wherein you even have two hours to spare (thats if you talk non-stop throughout the day, otherwise the standby time is up to an amazing 200 hours or rather 8.3 days). You will be hands free without the need to reach in your pocket for your cell phone, wherein it features a volume control so you can increase the volume while stuck in traffic or decrease it when in a relatively quite area. Operating time: up to 10 hours # Standby time: up to 200 hours # Connectors: Nokia 2 mm Battery Charger connector # Bluetooth: 2.1 with enhanced Data rate (EDR) # Bluetooth Profiles: Hands free profile (HFP) 1.5 & Headset profile (HSP) 1.1 # Operating Keys: # Send/End key # Volume Up/Down # Three LEDs: green, yellow and red # Power key # Compatible Nokia chargers: # Nokia Travel Charger AC-4 # Nokia Compact Travel Charger AC-5 # Nokia Compact Charger AC-3 # Nokia Mobile Charger DC-4 # In the box: # Nokia Bluetooth Headset BH-104 # User guide # Nokia Compact Charger AC-3 # Unit Dimensions: 1.89" x 0.89" x 0.64" (without earpiece) & 0.78" (with earpiece); Weight: 0.45 oz. (without ear loop) # Compatible with phones and devices supporting Bluetooth Specification v 2.1, 2.0, 1.2 or 1.1, Hands free Profile 1.5 or 1.0 and/or Headset Profile 1.1