|Operated by||National Express West Midlands/ Choice Travel|
|Garage||Walsall Depot/ Wednesfield|
|Vehicle||Volvo B6LE/Wright Crusader/Any (Often Optare Solo or Dennis Dart)|
|Peak vehicle requirement||1|
|Via||Walsall Manor Hospital, Alumwell, Darlaston & Herberts Park|
|Level||07:40 - 20:40 Monday - Friday, 08:40 - 20:40 Saturday. No Sunday Service.|
|Journey time||26 Minutes (639), 23 Minutes (639E)|
Currently National Express West Midlands operate the 639 Monday - Saturday at an hourly frequency between 09:30 and 17:00. They also operate a few 639E services, at 07:40 on weekdays and 08:40 on a Saturday from Herberts Park to Walsall and at 17:04 and 17:45 towards Herberts Park on Monday - Saturday, however their is only one return journey from Herberts Park at 18:15 on a Saturday with none on weekdays, despite the fact the depot is in Walsall. Service 639 links Walsall with Wednesbury, whilst the 639E is a shortened working of the 639 linking the Herberts Park area of Darlaston with Walsall. The routes also link Walsall with The Manor Hospital, Alumwell and Darlaston.
The 639E is also operated on a Centro contract to Choice Travel to operate 3 evening journeys. There are only two journeys in each direction leaving Walsall at 18:55 and 19:55. Rather confusingly, the 639E by Choice Travel is actually numbered the 639, despite being the same as the 639E service.